Purpose: Designed to measure the basic positional concepts of young children.
Population: Kindergarten through second grade.
Score: Percentile or Total Group scores.
Time: (45) minutes.
Author: Ann E. Boehm.
Publisher: The Psychological Corporation.
Description: The Boehm Test of Basic Concepts-Revised (BTBCR) was developed to measure the understanding of basic positional concepts of young children, that is, whether individuals in kindergarten, Grade 1, and Grade 2 can correctly identify a picture from among a choice of three when presented with verbal cues incorporating such terms as over, least, left, and so on. Based on these results, children can be identified as deficient in conceptual development, with resultant curricular implications.
Scoring: Once scored, the results can be translated into percentiles, which may be done by socioeconomic level, or by the total group.
Reliability: A number of measures of the reliability of the instrument are presented. Correlations reported between Forms C and D (N=625) are .82 for Kindergarten, .77 for Grade 1, and .65 for Grade 2. Correlations of Forms C and D with Form A of the BTBC (N =173) are .65 and .62, respectively. Split-half reliability coefficients and standard errors of measurement are presented by form, grade, and socioeconomic level. These relationships vary between .55 and .87, with the coefficients being lower at Grade 2 than at Kindergarten and Grade 1. Stability was measured through test-retest with a 1-week interval (N = 548) and varies between .55 and .88.
Validity: Validity is measured through the relationship of scores on the Boehm-R and various measures of academic achievement (the total batteries of the Comprehensive Test of Basic Skills, the California Achievement Test, and the Iowa Test of Basic Skills), as well as through reading level as measured on the Harcourt Brace Jovanovich Bookmark Reading Program. The coefficients of correlation varied from .24 (Grade 2 applications with ITBS) through .64 (Kindergarten Form D with CTBS), with a median of .44.
Norms: The norming of the Boehm-R occurred in 1983, involving approximately 10,000 children in public school districts selected as nationally representative by size of the district and geographic location. Socioeconomic status was estimated based on each building's percentage of students who qualified for subsidized lunches, not on the characteristics of the individual children.
Suggested Uses: Recommended for assessment of receptive conceptual development in educational and research settings.