ABSTRACT
At age 4, intelligence was assessed with the abbreviated version of the Stanford-Binet Intelligence Scale. Test-retest reliability of the IQ scores was .83 in a random sample of 140 children reexamined after 3 months by a visiting psychologist from another study center. Concept formation ability was evaluated with the Graham-Emhart Block Sort, a test requiring the children to group blocks differing in color, size, and shape. The maximum score on sorting tasks at three levels of difficulty was 45. Test-retest reliability was .43 in the sample of 140 children. The four fine motor subtests in the battery were bead stringing from the Stanford-Binet, Wallin Pegboard B, Porteus Maze IV, and copying a circle, cross, and square. Gross motor skills were evaluated with a line-walking task, hopping, and catching a ball. Fine and gross motor scores, ranging from 0 to 100, were derived from the number of subtests passed in each area (Broman et aI., 1975). Hand dominance was determined from performance on the pegboard 122
Table 7-1 Standardized Coefficients for Preschool Discriminators Between
the Severely Retarded and Comparison Groups
Comparison Group
Variablea White Black
MR BL AV AA MR BL AV AA
Abnormal behavior summary rating .30 .57 .59 .26 .33 .67 .79 . II
Abnormal speech production at age 3 .12 .22 .02 .15 .26 .17
