Summary of clinical/behavioral battery - Objective 2

Detailed information for each instrument, including reliability and validity estimates, can be found in the NIHPD protocol.

The following table indicates measures administered by age group. Brief descriptions of the measures presented in the table will follow.

Age (months)
Instruments Administered
Newborn
Full Telephone Screening Interview*
Family History Interview for Genetic Studies (FIGS)*
Neurological Exam*
2-11
Full Telephone Screening Interview*
Family History Interview for Genetic Studies (FIGS)*
Neurological Exam*
Carey Temperament Scales
2 – 4 months: Early Infant Temperament Questionnaire
4 – 11 months: Revised Infant Temperament Questionnaire
Parent Stress Index (PSI)
Bayley Scales of Infant Development – II (BSID)
Preschool Language Scale (PLS-3)
12-35
Full Telephone Screening Interview*
Family History Interview for Genetic Studies (FIGS)*
Neurological Exam*
Carey Temperament Scales: Toddler Temperament Scale
Parent Stress Index (PSI)
Bayley Scales of Infant Development – II (BSID)
Preschool Language Scale (PLS-3)
Child Behavior Checklist (CBCL)*
Handedness
36-53
Full Telephone Screening Interview*
Family History Interview for Genetic Studies (FIGS)*
Neurological Exam*
Carey Temperament Scales: Behavioral Style Questionnaire
Parent Stress Index (PSI)
Bayley Scales of Infant Development – II (BSID)
Psychomotor Development Scale (PDI) – only
Preschool Language Scale (PLS-3)
Child Behavior Checklist (CBCL)*
Handedness
Purdue Pegboard (half board)*
Cambridge Neuropsychological Test Automated Battery (CANTAB)*
Differential Abilities Scale (DAS)
NEPSY (Semantic)*

Note: * Summaries of these instruments are found in Objective 1’s summary of clinical/behavioral battery.

Brief descriptions of Objective 2 measures

1) Bayley Scales of Infant Development (BSID – II; Bayley, 1993) – was administered to measure infants’ development in 3 domains: cognitive, motor, and behavioral. These domains are measured using the Mental Scale (MDI), Psychomotor Scales (PDI), and Behavioral Rating Scale, respectively.

2) Carey Temperament Scales (CTS; Carey et al., 1995) – consists of several developmentally appropriate questionnaires designed to measure the quality and quantity of certain behaviors and affect that are associated with each developmental period. It measures the nine most commonly investigated temperament characteristics: activity level, rhythmicity, approach-withdrawal, adaptability, intensity, mood, attention span and persistence, distractibility, and sensory threshold. The following scales were used in the current study

  • Early Infant Temperament Questionnaire (EITQ; 1 – 4 months)
  • Revised Infant Temperament Questionnaire (RITQ; 4 – 11 months)
  • Toddler Temperament Scale (TTS; 12 – 35 months)
  • Behavioral Style Questionnaire (BSQ; 36 – 53 months)

3) Differential Ability Scales (DAS; Elliott, 1990) – measures both verbal and nonverbal abilities, designed to be a culture-fair test. Subjects, ages 36 – 53 months, were administered all subtests: pattern recognition, picture similarities, verbal comprehension, early number concepts, naming vocabulary, and copying.

4) Handedness – consists of 3 age specific versions in which the subject is asked to demonstrate handedness.

  • Version 1: ages 1:0 – 2:11
  • Version 2: ages 3:00 – 5:11
  • Version 3: pantomime for ages 6:0+

5) Parenting Stress Index (PSI; Abidan, 1995) – a parent questionnaire designed to identify parent-child systems under stress and at risk for poor parenting and/or child related emotional problems.

6) Preschool Language Scale – Version 3 (PLS-3; Zimmerman et al., 1992) – assesses receptive and expressive language skills, as well as behaviors considered to be precursors to language development in children as young as 2 weeks old.