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C.2 CONSTRUCTS USED IN THE ANALYSIS: PSYCHOMETRIC PROPERTIES
To be included in the impact analyses, constructed variables had to meet the following criteria:
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Sufficient Data at the Item Level. If an individual was missing 25 percent or more of the items that went into a constructed variable, we did not construct the variable for that individual and that individual was not included in the impact analysis of that variable. If the individual was missing fewer than 25 percent of the items needed for a constructed variable, we imputed values based on the mean of the nonmissing items. The proportion of scores that required imputation was fairly lowif a parent began a measure, they generally completed all of the items. We never imputed values for our direct child assessments (the Bayley, MacArthur, PPVT-III, and the TVIP) or our parent-child videotaped assessments.
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Adequate Distribution of Scores. For our constructed variables, we checked the mean, standard deviation, skewness, and kurtosis to determine whether the variables had a normal distribution and seemed to have a similar distribution to those found in other studies using the same measure. In general, we found that our distributions met the criteria for normality, with skewness and kurtosis levels within appropriate ranges. The distributions were similar to those found in other studies of low-income families. Our sample means and standard deviations were generally lower than the means found in child assessment norming samples and in studies using similar measures with a more nationally representative sample of children and families.
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Adequate Internal Consistency Reliability. After discussion within the consortium and consultation with outside experts, we decided to include measures with internal consistency reliability of .65 and above in our impact analyses.
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Consistent Reliability across Major Race/Ethnicity Subgroups. We examined internal consistency reliability across our three major race/ethnicity groups, white non-Hispanics, black non-Hispanics, and Hispanics, to determine whether our measures had similar levels of reliability across these groups.
To prepare our data for analysis, we first consulted the literature and either scored questionnaires and child assessments as they had been scored by the author of the measure or we used a scoring approach consistent with the current literature. For new measures or for measures which required additional data reduction, we conducted factor analyses as needed. We also coded the parent-child videotaped assessments and analyzed the ratings. The factor analysis and coding procedures are described below.
a. Factor Analysis Approach
We used exploratory factor analysis techniques with Varimax rotation to create variables from multi-item questionnaire and observational measures. All factor analyses were conducted using only nonmissing child- and parent-level data. We used the following criteria to judge the adequacy of our factor analysis results:
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Items within factors made sense conceptually
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The solution yielded internal consistency reliability (coefficient alpha) of .65 or greater within each factor
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The solution minimized the number of items with appreciable loadings (.35 and greater) on multiple factors
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The solution minimized the number of items that did not load appreciably on any factor
b. Coding of the Parent-Child and Father-Child Videotaped Interactions at 24 and 36 months and Variable Creation
All videotapes of the 24- and 36-month parent-child videotaped interactions were coded by staff at the Center for Children and Families, Columbia University, Teachers College. At 24 months, a 10-minute semistructured free play task and a 3-minute teaching task were administered. At 36 months, the play task and a 6-minute puzzle challenge task were administered. These four tasks were also administered and coded for the 24- and 36-month waves of the father study. All codes were blind to the research status of the families.
Free Play Task: 24 and 36 Months. The semistructured free play task was coded according to scales adapted from the NICHD Study of Early Child Care’s Three Box coding scales (NICHD Early Child Care Research Network 1997, 1999; Owen 1992; Owen et al. 1993). Nine 7-point coding scales assessed child and parent behavior. The three child scales rated engagement of parent (extent to which child initiates and/or maintains interaction with parent); sustained attention with objects (degree of child’s involvement with toys in the three bags); and negativity toward parent (degree to which child shows anger or hostility toward parent).
The six parenting scales addressed sensitivity (the extent to which the parent takes the child’s perspective, accurately perceives the child’s signals, and promptly and appropriately responds to these signals); positive regard (demonstration of love, respect, admiration); stimulation of cognitive development (teaching, actively trying to expand the child’s abilities); detachment (under-involvement and lack of awareness, attention, engagement); intrusiveness (over-involvement, over-control); and negative regard (discontent, anger, rejection). Box C.2A includes more information about the individual coding scales.
A trained coding team leader worked with a five- to six-member coding team to establish and maintain inter-rater reliability throughout the coding period. For the coding of the 24- and 36-month semistructured play assessment, inter-rater reliabilities on the nine 7-point scales between the team leader and coders were established to a criterion of 85 percent (exact or within one point agreement). Thereafter, the team conducted weekly inter-rater reliability checks on a randomly selected 15 percent of each coder’s videotape assignment. In the main study sample, a total of 151 tapes (9 percent of the 1,782 codable tapes) at 24 months and 174 tapes (11 percent of the 1,660 codable tapes) at 36 months served as reliability tapes. Percent agreement (exact or within one point) averaged 93 percent across all reliability checks for all 24-month coders, with a range of 84 to 100 percent. Percent agreement averaged 94 percent for all 36-month coders, with a range of 86 to 100 percent. In the father study sample, 43 tapes (14 percent of the 318 codable tapes) at 24 months and 44 tapes (15 percent of the 303 codable tapes) at 36 months served as reliability tapes. Percent agreement (exact or within one point) averaged 94 percent for all 24-month coders, with a range of 85 to 100 percent. Percent agreement averaged 94 percent for all 36-month coders, with a range of 86 to 100 percent.
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BOX C.2A
24- AND 36-MONTH CODING SCALES FOR
THE PARENT-CHILD AND FATHER-CHILD Child Scales Engagement of Parent Reflects the extent to which the child shows, initiates, and/or maintains interaction with the parent. This may be expressed by approaching or orienting toward parent, establishing eye contact with parent, positively responding to parent’s initiations, positive affect directed to parent, and/or engaging parent in play. Sustained Attention Measures the degree to which the child is involved with the toys presented in the three bags. Indicators include the degree to which child “focuses in” when playing with an object and the extent to which child coordinates activities with several objects and/or explores different aspects of a toy. Negativity toward Parent Reflects the degree to which child shows anger, hostility, or dislike toward parent. Expressions may be overt (for example, forcefully rejecting a toy offered by parent or pushing parent away) or covert (for example, hitting or throwing an object in response to parent’s behavior). Parent Scales Sensitivity Measures the degree to which the parent observes and responds to the child’s cues (gestures, expressions, and signals) during times of distress as well as non-distress. Key features include being child-centered, “tuning in” to the child, manifesting an awareness of child’s needs, moods, interests, and capabilities, being flexible in supporting and responding to child’s emerging need for autonomy, control, independence, and mastery even while enforcing necessary rules, regulations, and constraints. Positive Regard Assesses the parent’s expression of love, respect and/or admiration for the child. Key features include verbal praising of child’s efforts and successes, words of encouragement or support, and nonverbal affect, the way in which parent watches child attentively and looks into the child’s face. Stimulation of Cognitive Development Measures the quality and quantity of the parent’s effortful teaching to enhance child’s perceptual, cognitive, and linguistic development. Key features include being aware of the child’s developmental level, efforts to bring the child above that level, flexibility and timing of instructions or explanations, and use of complex and varied language. Detachment Measures the parent’s lack of awareness, attention, and engagement with the child. Key features include being inattentive, perfunctory, or cold when interacting with child or, at the higher levels, complete lack of attention to or interaction with child. Intrusiveness Assesses the degree to which the parent exerts control over the child rather than acting in a way that recognizes and respects the validity of the child’s perspective. Intrusive interactions are clearly adult-centered rather than the child-centered and involve imposing the parent’s agenda on the child despite signals that a different activity, level or pace of interaction is needed. Negative Regard Reflects the parent’s expression of discontent with, anger toward, disapproval of, and/or rejection of the child. This may be expressed verbally (words of derogation or disregard toward child) or physically (parental roughness, grabbing, or hitting child). NOTE: Scales are assessed on a seven-point scale, “1” indicating a very low incidence of the behavior and “7” indicating a very high incidence of the behavior. The 24- and 36-month scales were adapted by Christy Brady-Smith, Rebecca Fauth, Claudia O’Brien, Lisa Berlin, and Anne M. Ware and were based on the “Early Head Start 14-month Child-Parent Interaction Rating Scales for the Three Bag Assessment” (Ware, Brady, O’Brien, and Berlin 1998), the NICHD Study of Early Child Care 15-, 24-, and 36-month ratings of Parent-Child Interaction, and the “Manual for Coding Freeplay - Parenting Styles from the Newark Observational Study of the Teenage Parent Demonstration” (Brooks-Gunn et al. 1992). |
We conducted preliminary analyses examining correlations among these scales, possible underlying factors, and internal consistency. Based on our analyses, we created a main study composite parenting score, “supportiveness” (coefficient alpha = .83 and .82 at 24 and 36 months, respectively), by computing the mean scores for parental sensitivity, cognitive stimulation, and positive regard, which were highly and significantly correlated (correlations ranged from .52 to .67 at 24 months and from .50 to .71 at 36 months).
The scales assessing parental insensitivity (detachment, intrusiveness, and negative regard) and the child scales (engagement of parent, sustained attention with objects, and negativity toward parent) were retained as individual scales. In the main study, the correlations among the three child scales were moderate to high (statistically significant correlations of .34 to .55 at 24 months and .27 to .63 at 36 months). The correlations among the four parenting scales were small to moderate and statistically significant (correlations of .11 to .40 at 24 months and .12 to .36 at 36 months), with the exception of supportiveness and detachment (correlation of -.56 and -.45, respectively) and intrusiveness and negative regard (correlation of .52 and .47, respectively).
We created the same supportiveness composite for the father study. In the father study, correlations indicated a strong relationship between the variables that make up the composite score of supportiveness (correlations ranged from .55 to .64 at 24 months and from .60 to .73 at 36 months). The internal consistency of supportiveness was .86 at both time points. The same scales used in the main study were retained in the father study. Correlations among the three child scales were moderate to high (statistically significant correlations of .26 to .58 at 24 months and .30 to .61 at 36 months), with the exception of sustained attention and negativity toward parent at 36 months (correlation of .14). The correlations among the four parenting scales were moderate (correlations of .31 to .49 at 24 months and .20 to .42 at 36 months), with the exception of negative regard and detachment, which were small (nonsignificant correlations of .17 and .06, respectively), and intrusiveness and detachment, which were not significant (correlation of .07 in both waves).
Teaching Task: 24 Months. The Teaching Task was administered and videotaped in the home at 24 months. This procedure was a modified version of the Nursing Child Assessment Teaching Scales (NCATS), in which the parent instructs the child in an unfamiliar play activity. The parent was asked to select, from two choices, a task that the child either could not do or that would be the harder task for the child. The tasks were either sorting blocks, or reading a picture book. Parents were instructed to explain the task to the child and give the child any necessary assistance. The total interaction lasted three minutes.
For the coding of the 24-month teaching task mother-child interactions, five coders were trained by a certified NCATS instructor during a three-day training course. Each coder was required to pass the NCATS certification in the weeks following the initial training. In addition, inter-rater reliabilities between a certified coding team leader and the NCATS-certified coding team were then established to a criterion of 85 percent (exact agreement) on the individual items from the 6 NCATS subscales. Thereafter, intermittent inter-rater reliability checks on a randomly selected 15 percent of each coder’s videotape assignment were conducted. A total of 130 tapes (8 percent of the 1,687 codable tapes) served as reliability tapes. Percent agreement on NCATS subscales averaged 89 percent with a range from 84 to 95. Two of these certified coders also coded the videotapes of the father-child teaching interaction. Initial reliability on coding father-child interactions was achieved on 37 videotapes (12 percent of the 312 codable), with intermittent ongoing reliability checks as described above for the main study tapes. Percent agreement on NCATS subscales for father study tapes ranged from 89 percent to 97 percent (average of 93 percent).
Coding consisted of dichotomous (yes/no) ratings on each of 73 behaviors, including 50 parent behaviors and 23 child behaviors. The published coding system (Sumner and Spietz, 1994) groups these behaviors into six subscales. The four parent subscales include sensitivity to cues (caregiver’s sensitive responses to child’s cues), response to child’s distress (caregiver’s change of the task and/or comforting responses to a child exhibiting disengagement or distress), social-emotional growth fostering (positive affect and avoidance of negative responses to the child), and cognitive growth fostering (caregiver’s instruction and modeling of the task). Child behaviors were coded in two subscales: clarity of cues (facial expressions and motor activity indicating child’s response to the task situation), and responsiveness to caregiver (child’s facial expressions, vocalizations, and other responses to caregiver).Preliminary analyses of the internal consistency of these scales revealed that very few of the subscales had internal consistency that met the Early Head Start criterion for use as outcome variables in the analyses of program impacts (coefficient of alpha = .65 or greater). Alpha for the parent subscales ranged from .24 to .74. Extensive consultation with Kathryn Barnard of the University of Washington (and developer of the NCATS scales) explored several potential explanations for the pattern of alphas found in the Early Head Start sample, including the very detailed coding afforded by the use of videotapes (rather than live coding), a shorter time allotted for the teaching interaction in the Early Head Start administration, and a truncated choice of tasks used in the Early Head Start protocol. These discussions, along with extensive psychometric analysis of the data and recommendations from Kathryn Barnard, led us to focus impact analyses exclusively on the total score (including all 73 coded items; coefficient alpha = .66 for mother tapes; alpha = .68 for father tapes) and the parenting items, added together into a parent total score (coefficient alpha = .66 for mothers; .64 for fathers).
Puzzle Challenge Task: 36 Months. The puzzle task was administered and videotaped in the home at 36 months and is based on the work of Matas, Sroufe, and colleagues (Matas, Arend, & Sroufe, 1978; Sroufe, Egeland, & Kreutzer, 1990). The child is asked to solve up to three puzzles of increasing difficulty in 6 to 7 minutes. The parent is instructed to let the child work on the puzzles independently first and then give the child any help he or she may need. If the dyad takes more than four minutes to solve a puzzle, the assessor/interviewer asks them to move on to the next puzzle.
Seven 7-point scales were adapted from the Newark Observational Study of the Teenage Parent Demonstration (TPD; Brooks-Gunn, Liaw, Michael, & Zamsky, 1992; Spiker, Ferguson, & Brooks-Gunn, 1993) to assess child and parent behaviors during the puzzle task. In developing the Early Head Start scales, the TPD scales were condensed and examples were tailored to the Early Head Start puzzle task assessment. The three child scales rated engagement of parent (extent to which child initiates and/or maintains interaction with parent); persistence (degree to which child is goal-oriented, focused and motivated to complete the puzzles); and frustration with task (degree to which child shows anger or frustration with the puzzle task).
The four parenting scales rated supportive presence (the degree to which the parent provides emotional, physical, and affective support to the child during the task); quality of assistance (the quality of instrumental support and assistance the provided to the child); intrusiveness (over-involvement, over-control); and detachment (under-involvement and lack of awareness, attention, engagement). Box C.2B includes more information about the individual coding scales.
To train coders, a training videotape was developed containing exemplars of high, medium and low scoring interactions along each scale. Coders reached 85 percent agreement or higher with a “gold standard” before coding unique interactions. A randomly selected 15 to 20 percent of each coder’s weekly tape assignments were used to check coders’ ongoing reliability.
In the main study sample, a total of 194 tapes (12 percent of the 1,639 codable tapes) served as reliability tapes. Percent agreement (exact or within one point) averaged 93 percent across for all 36-month puzzle task coders, with a range of 88 to 100 percent. In the father study sample, 55 tapes (18 percent of the 300 codable tapes) served as reliability tapes. Percent agreement (exact or within one point) averaged 97 percent for all coders, with a range of 90 to 100 percent. In the main study, the correlation among child engagement and frustration with the task was not significant (correlation of -.05); correlations among the other child scales were moderate to high (statistically significant correlations of -.21 and .41). The correlations among the four parenting scales were moderate to high and statistically significant (correlations of -.27 to .59), with the exception of the correlation between intrusiveness and detachment, which was small but significant (correlation = .16).
In the father study, the correlation among child engagement and frustration with the task was small, but significant (correlation = -.13); correlations among the other child scales were moderate to high (statistically significant correlations of -.21 and .31). The correlations among the four parenting scales were moderate to high and statistically significant (correlations of .24 to .52).
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BOX C.2B
36-MONTH CODING SCALES FOR THE PARENT-CHILD AND FATHER-CHILD PUZZLE CHALLENGE ASSESSMENTS Child Scales Engagement of Parent Reflects the extent to which the child shows, initiates, and/or maintains interaction with the parent and communicates positive regard and/or positive affect to the parent. Persistence Measures how goal-oriented, focused and motivated the child remains toward the puzzle throughout the task, even in the face of frustration or boredom. The focus of persistence is on the child’s apparent effort to solve the puzzle, not on how well the child performs. Frustration with Task Measures the degree to which the child expresses frustration or anger toward the puzzle task. Expressions may be intense (for example, throwing the puzzle to the side or refusing to continue working on the puzzle) or subtle (for example, sighing, frowning, pushing a puzzle piece that will not fit). Parent Scales Supportive Presence Focuses on the parent’s emotional availability and physical and affective presence during the puzzle task. Supportive presence involves providing a secure base from which the child can explore, and displaying emotional support and enthusiasm toward the child and his or her autonomous work. Quality of Assistance Measures the instrumental support and assistance the parent offers the child during the puzzle task. Specifically, quality of assistance is the extent to which the parent helps the child by scaffolding the task to bring the child above his/her level of understanding and ability, and helping the child to think analytically. Key features include illustrating general cause and effect relationships within the puzzle and its related parts, and stimulating the child’s perceptual, cognitive, and linguistic development, so that the child might be better able to solve a similar problem autonomously. Intrusiveness Assesses the degree to which the parent controls the child rather than recognizing and respecting the validity of the child’s independent efforts to solve the puzzle. Intrusive interactions are clearly adult-centered rather than child-centered and undermine the child’s potential for understanding and solving the puzzles independently. Detachment Measures the parent’s lack of awareness, attention, and engagement with the child. Key features include being inattentive, perfunctory, or cold when interacting with child or, at the higher levels, complete lack of attention to or interaction with child. NOTE: Scales are assessed on a seven-point scale, “1” indicating a very low incidence of the behavior and “7” indicating a very high incidence of the behavior. The 36-month puzzle task scales were adapted by Christy Brady-Smith, Rebecca M. Ryan, Lisa J. Berlin, Jeanne Brooks-Gunn, and Allison Sidle Fuligni. They are based on the “Manual for Coding the Puzzle Task” from the Newark Observational Study of the Teenage Parent Demonstration (TPD; Brooks-Gunn, Liaw, Michael, & Zamsky, 1992; Spiker, Ferguson, & Brooks-Gunn, 1993). |
c. Psychometric Information for Key Constructed Variables
Table C.2A presents key psychometric data for the main study constructed variables created for the interim report and updated here. Table C.2B presents key psychometric data for the main study constructed variables included in this report. The tables are organized by measurement domain. We include the sample size, possible range of values for each variable, the actual range found in the Early Head Start sample, the sample mean, standard deviation, and the internal consistency reliability (coefficient alpha). The psychometric data are presented for the full sample, that is, with the program and control group combined.
| Possible Range | Range | |||||||
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| Measure | Sample Size |
Minimum | Maximum | Minimum | Maximum | Mean | Standard Deviation |
Internal Consistency Reliabilitya |
| Child Cognitive and Language Development | ||||||||
| Bayley Mental Development Index (MDI) Standard Score | 1,781 | 49 | 150 | 49 | 134 | 89.1 | 13.7 | NA |
| MacArthur Communicative Development Inventories (CDI) Vocabulary Production Score | 2,070 | 0 | 100 | 0 | 100 | 54.8 | 23 | 0.98 |
| MacArthur CDI Sentence Complexity Score | 1,986 | 0 | 37 | 0 | 37 | 8.2 | 8.3 | 0.95 |
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Child Social-Emotional Development
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| Engagement During Parent-Child | 1,796 | 1 | 7 | 1 | 7 | 4.3 | 1.1 | NA |
| Semistructured Play Sustained Attention with Objects During Parent-Child Semistructured Play | 1,796 | 1 | 7 | 1 | 7 | 5 | 1 | NA |
| Negativity Toward Parent During Parent- Child Semistructured Play | 1,796 | 1 | 7 | 1 | 7 | 1.7 | 1 | NA |
| Bayley Behavioral Rating Scale (BRS): Emotional Regulation | 1,916 | 1 | 5 | 1 | 5 | 3.6 | 0.8 | 0.92 |
| Bayley BRS: Orientation/Engagement | 1,911 | 1 | 5 | 1 | 5 | 3.6 | 0.8 | 0.83 |
| Child Behavior Checklist: Aggressive Behavior | 2,103 | 0 | 30 | 0 | 30 | 10.1 | 5.6 | 0.91 |
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Quality of the Home Environment and Parenting
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| Home Observation for Measurement of the Environment (HOME) Total Score | 1,951 | 0 | 31 | 8.3 | 31 | 26.4 | 3.5 | 0.76 |
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Parenting Behavior: Emotional Support
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| HOME Emotional Responsivity | 1,949 | 0 | 7 | 0 | 7 | 6.1 | 1.4 | 0.74 |
| Supportiveness During Parent-Child Semistructured Play | 1,709 | 1 | 7 | 1 | 7 | 4 | 1.1 | 0.83 |
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Parenting Behavior: Stimulation of Language and
Learning
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| HOME Support of Cognitive, Language, and Literacy Environment | 2,148 | 0 | 12 | 0 | 12 | 10.2 | 1.7 | 0.68 |
| Parent-Child Play | 2,124 | 1 | 6 | 1 | 6 | 4.5 | 0.8 | 0.78 |
| HOME Maternal Verbal-Social Skills | 1,998 | 0 | 3 | 0 | 3 | 2.8 | 0.6 | 0.71 |
| Parental Modernity Progressive | 2,131 | 5 | 25 | 5 | 25 | 20.9 | 3.4 | 0.68 |
| Parental Modernity Traditional | 2,129 | 5 | 25 | 5 | 25 | 18.7 | 4.2 | 0.73 |
| Parent-Child Outside Activities | 2,124 | 1 | 6 | 1 | 6 | 2.8 | 0.7 | 0.71 |
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Parenting Behavior: Negative Parenting Behavior
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| Detachment During Parent-Child Semistructured Play | 1,794 | 1 | 7 | 1 | 7 | 1.4 | 0.9 | NA |
| Intrusiveness During Parent-Child | 1,796 | 1 | 7 | 1 | 7 | 1.9 | 1 | NA |
| Semistructured Play Negative Regard During Parent-Child | 1,796 | 1 | 7 | 1 | 7 | 1.4 | 0.8 | NA |
| Semistructured Play HOME Absence of Punitive Interactions | 1,947 | 0 | 5 | 0 | 5 | 4.4 | 1.2 | 0.78 |
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Knowledge of Child Development and Discipline
Strategies
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| Knowledge of Infant Development Inventory (KIDI) | 2,141 | 1 | 4 | 1.8 | 4 | 3.4 | 0.4 | 0.56b |
| Percentage of Parents Who Would Use Mild Discipline Only | 2,156 | 0 | 1 | 0 | 1 | 0.4 | 0.5 | NA |
| Index of Severity of Discipline Strategies | 2,156 | 1 | 5 | 1 | 5 | 2.7 | 1.7 | NA |
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Self-Sufficiency
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| Family Resource Scale | 2,223 | 39 | 195 | 68.3 | 195 | 152.9 | 19.4 | 0.91 |
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Parent Mental Health and Family Functioning
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| Parenting Stress Index (PSI) Parent-Child Dysfunctional Interaction | 2,130 | 12 | 60 | 12 | 56.7 | 17.2 | 5.9 | 0.78 |
| PSI Parental Distress | 2,131 | 12 | 60 | 12 | 60 | 25.4 | 9.3 | 0.82 |
| Family Environment Scale (FES) Family Conflict | 1,856 | 1 | 4 | 1 | 4 | 1.71 | 0.54 | 0.67 |
| Composite International Diagnostic Interview (CIDI) - Short Form: Major Depression (probability)c (lower bound) | 2,156 | 0 | 90.8 | 0 | 90.8 | 12.5 | 29.8 | NA |
Source: Parent interviews, child assessments, interviewer observations, and assessments of parent-child semistructured play assessments conducted when children were approximately 24 months old, and Parent Services Interviews conducted approximately 15 months after enrollment. aReliability was estimated using Cronbach’s coefficient alpha formula. (back) bThe KIDI items we used were a subset of the 20 used by the IHDP study. Although the resulting summary score did not meet our .65 internal consistency reliability criterion, we included the score in the impact analysis because parent knowledge was a key outcome for many of the programs and these items have been used successfully in other studies with other samples. It is likely that our reduction of the number of items resulted in the reduced reliability.(back) cA skip logic error in the version of the CIDI that we used prevented us from scoring the CIDI in the usual way. Based on the advice of the CIDI developer, we created 2 versions of the CIDI scores-a lower and upper bound (the true CIDI score is between these two scores). The lower and upper bound scores tend to be 1 to 4 percentage points apart for the full sample and most subgroups. The impact estimates and their significance using both versions are very similar. In the report, we use the lower bound version of the measure (the most conservative estimate of the probability of depression).(back) |
| Possible Range | Range | |||||||
|---|---|---|---|---|---|---|---|---|
| Measure | Sample Size |
Minimum | Maximum | Minimum | Maximum | Mean | Standard Deviation |
Internal Consistency Reliabilitya |
| Child Cognitive and Language Development | ||||||||
| Bayley Mental Development Index (MDI) Standard Score | 1,658 | 49 | 150 | 49 | 134 | 90.6 | 12.6 | NA |
| Peabody Picture Vocabulary Test (PPVT-III) Standard Score | 1,424 | 40 | 160 | 41 | 125 | 83 | 15.6 | NA |
| Teste de Vocabulario en Images Peabody (TVIP) Standard Score | 228 | 78 | 145 | 78 | 131 | 95.3 | 8.2 | NA |
| Child Social-Emotional Development | ||||||||
| Engagement During Parent-Child Semistructured Play | 1,659 | 1 | 7 | 1 | 7 | 4.7 | 1 | NA |
| Sustained Attention with Objects During Parent-Child Semistructured Play | 1,656 | 1 | 7 | 2 | 7 | 4.9 | 1 | NA |
| Engagement During Parent-Child Puzzle Challenge Task | 1,645 | 1 | 7 | 1 | 7 | 5 | 0.9 | NA |
| Persistence During Parent-Child Puzzle Challenge Task | 1,634 | 1 | 7 | 1 | 7 | 4.5 | 1.2 | NA |
| Bayley Behavioral Rating Scale (BRS): Emotional Regulation | 1,759 | 1 | 5 | 1 | 5 | 3.9 | 0.8 | 0.9 |
| Bayley BRS: Orientation/Engagement | 1,768 | 1 | 5 | 1 | 5 | 3.8 | 0.7 | 0.8 |
| Negativity Toward Parent During Parent- Child Semistructured Play | 1,659 | 1 | 7 | 1 | 7 | 1.3 | 0.6 | NA |
| Frustration with Parent-Child Puzzle Challenge Task | 1,642 | 1 | 7 | 1 | 7 | 2.7 | 1.3 | NA |
| Child Behavior Checklist: Aggressive Behavior | 2,031 | 0 | 38 | 0 | 37 | 11.1 | 6.5 | 0.88 |
| Quality of the Home Environment and Parenting: Overall and Physical Environment | ||||||||
| Home Observation for Measurement of the Environment (HOME) Total Score | 1,807 | 0 | 37 | 10 | 37 | 27.2 | 4.8 | 0.8 |
| HOME Internal Physical Environment | 1,777 | 3 | 9 | 3 | 9 | 7.8 | 1.5 | 0.77 |
| Parenting Behavior: Emotional Support | ||||||||
| HOME Warmth | 1,794 | 0 | 3 | 0 | 3 | 0.3 | 0.6 | 0.72 |
| Supportiveness During Parent-Child Semistructured Play | 1,658 | 1 | 7 | 1 | 6.3 | 3.9 | 0.9 | NA |
| Supportive Presence During Parent-Child Puzzle Challenge Task | 1,647 | 1 | 7 | 1 | 7 | 4.5 | 1.3 | NA |
| Parenting Behavior: Stimulation of Language and Learning | ||||||||
| HOME Support of Language and Learning | 1,861 | 0 | 13 | 1 | 13 | 10.5 | 2 | 0.67 |
| Parent-Child Play | 2,076 | 1 | 6 | 1 | 6 | 4.4 | 0.9 | 0.8 |
| Quality of Assistance During Parent-Child Puzzle Challenge Task | 1,646 | 1 | 7 | 1 | 7 | 3.5 | 1.2 | NA |
| Parenting Behavior: Negative Parenting Behavior | ||||||||
| Detachment During Parent-Child Semistructured Play | 1,659 | 1 | 7 | 1 | 6 | 1.2 | 0.6 | NA |
| Intrusiveness During Parent-Child Semistructured Play | 1,659 | 1 | 7 | 1 | 6 | 1.6 | 0.8 | NA |
| Detachment During Parent-Child Puzzle Challenge Task | 1,646 | 1 | 7 | 1 | 7 | 1.6 | 0.9 | NA |
| Intrusiveness During Parent-Child Puzzle Challenge Task | 1,646 | 1 | 7 | 1 | 7 | 2.7 | 1.3 | NA |
| Negative Regard During Parent-Child Semistructured Play | 1,658 | 1 | 7 | 1 | 6 | 1.3 | 0.6 | NA |
| HOME Harshness | 1,801 | 0 | 3 | 0 | 3 | 0.3 | 0.6 | 0.55 |
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Discipline Strategies
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| Percentage of Parents Who Would Use Mild Discipline Only | 2,105 | 0 | 1 | 0 | 1 | 0.4 | 0.5 | NA |
| Index of Severity of Discipline Strategies | 2,105 | 1 | 5 | 1 | 5 | 3.4 | 1.6 | NA |
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Self-Sufficiency
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| Family Resource Scale | 2,073 | 39 | 195 | 79 | 195 | 154 | 18.9 | 0.92 |
| Parent Mental Health | ||||||||
| Parenting Stress Index (PSI) Parental Distress | 1,634 | 12 | 60 | 12 | 60 | 25.2 | 9.6 | 0.84 |
| PSI Parent-Child Dysfunctional Interaction | 1,607 | 12 | 60 | 12 | 56.7 | 17.8 | 6.4 | 0.81 |
| Family Environment Scale (FES) Family Conflict | 1,442 | 1 | 4 | 1 | 4 | 1.7 | 0.5 | 0.68 |
| Center for Epidemiological Studies Depression (CES-D; Short Form) | 2,095 | 0 | 36 | 0 | 36 | 7.7 | 7 | 0.88 |
| Family Environment Scale (FES) Family Conflict | 1,442 | 1 | 4 | 1 | 4 | 1.7 | 0.5 | 0.68 |
| Source: Parent interviews, child assessments,
interviewer observations, and assessments of parent-child semistructured
play assessments conducted when children were approximately 36 months
old, and Parent Services Interviews conducted approximately 15 months
after enrollment.
aReliability was estimated using Cronbach’s coefficient alpha formula.(back) |
d. Father Study Measures and Constructed Variable Psychometrics
Data about fathers in this report are from three main sources: (1) parent interviews conducted in all 17 research sites when the children were approximately 14, 24, and 36 months old, (2) father interviews conducted in the 12 father study sites when the children were approximately 24 and 36 months old, and (3) father-child videotaped interactions conducted in 7 of the father study site when the children were approximately 24 and 36 months old. In this section we describe the main measures derived from each data source for this report and also present their psychometric properties.
Based on the parent interviews (usually conducted with the child’s mother), we constructed variables that summarize whether the child’s biological father was present in the child’s life, whether a male (the biological father or a father figure--in the case that the biological father did not live with the child) was present in the child’s life, and whether the mother was married to the child’s biological father or if he was either married to her, lived with her, or was her boyfriend. We defined father presence as: (1) the child and the biological father live together, (2) the child and the biological father do not live together but he sees the child a few times per month or more, (3) the child and the biological father do not live together and do not see each other a few times or month or more, but the mother reports that there is a man in the child’s life who is, “like a father” to the child. We created these variables at discreet points in time and also used them to create longitudinal variables that described father presence and marital status in relation to the mother.
At 24 and 36 months, we collected data directly from fathers and father figures identified by mothers as being involved in the lives of their children in the 12 father study sites. The father study response rates by site are reported in Appendix B. We designed the father study interviews to include a large degree of overlap with the parent interviews to allow us to compare mother and father responses. To measure father activities related to program services, we adapted questions from the parent services interviews and included them in the father interview. We also were interested in unique aspects of fathering and father-child interaction and included measures that would tap those constructs as well. The father-child videotaped interactions were identical to the parent-child interactions and were coded in the same way as described above.
In Box IV.1, we reported on five father program-related activities and the frequency with which fathers reported that they participated in those activities. In Box V.10 (Chapter V in Volume I), we described mother reports of father presence and marriage as described above. The rest of the Box V.10 father measures are described in Box C.2C. Their psychometric properties are described in Table C.2C.
|
BOX C.2C
FATHER STUDY MEASURES Father Activities with Child – measures the frequency with which the father or father figure reported engaging in different activities with the child over the past month. These included social activities; activities that can stimulate language development, such as reading or telling stories, dancing, singing, and playing outside together; caregiving activities such as putting the child to bed getting up at night with the child, and preparing meals. Item responses are coded on a six-point scale, with zero indicating “not at all”, and five indicating “more than once a day.” Eliminating 8 items that had low variability, we factor analyzed 25 father-child activity items using a Varimax rotation to develop four factor scores. We selected a factor solution that conformed to the following criteria: (1) factors made conceptual sense, (2) yielded an internal consistency reliability (Coefficient alpha) of .65 or greater, (3) minimized the number of items that loaded appreciably (.35 or greater) on multiple factors, and (4) minimized the number of items that did not load appreciably on any factors. To make it possible to compare responses across the four different scores, we standardized raw factor scores by converting them to T-scores. T-Scores have a mean of 50 and a standard deviation of 10.
Father Well-Being –
Discipline Strategies – measures the father’s strategies for handling four different potential conflict situations with the child: (1) the child keeps playing with breakable things; (2) the child refuses to eat; (3) the child throws a temper tantrum in a public place; and (4) the child hits the parent in anger. Fathers provided open-ended answers to how they would respond to each of the four situations, and these responses were classified into the types of discipline strategies, which were coded as binary variables. A father received a “1” for each strategy that was ever mentioned. In addition, we created the following composite measure:
Parenting Behavior –
During Father-Child Puzzle Challenge Task – measures the father’s behavior with the child during a puzzle completion task. The child was given a puzzle to play with, and the father was instructed to give the child any help needed. After 3 minutes, or earlier if the puzzle was completed, the interviewer gave the child a second, harder puzzle and asked the father not to help the child. If that puzzle was completed or 3 minutes elapsed, another, more challenging puzzle was provided. The puzzle challenge task was videotaped, and child and father behaviors were coded on a 7-point scale by child development researchers according to strict protocols. Four aspects of the father’s behavior with the child were rated on a 7-point scale:
Child Behavior with Father -
|
| Possible Range | Range | |||||||
|---|---|---|---|---|---|---|---|---|
| Measure | Sample Size |
Minimum | Maximum | Minimum | Maximum | Mean | Standard Deviation |
Internal Consistency Reliabilitya |
| Father Activities with Child | ||||||||
| Frequency of Caregiving Activities Score | 670 | 1 | 70 | 1 | 70 | 49.8 | 11.1 | 0.84 |
| Frequency of Social Activities Score | 670 | 1 | 73 | 1 | 73 | 49.8 | 11.8 | 0.79 |
| Frequency of Cognitive Activities Score | 671 | 1 | 73 | 1 | 73 | 49.6 | 11.1 | 0.79 |
| Frequency of Physical Play Score | 671 | 1 | 73 | 1 | 73 | 49.7 | 10.8 | 0.72 |
| Father Well-Being | ||||||||
| Parenting Stress Index (PSI) Parental Distress | 642 | |||||||

