Ninety-eight concepts from the Bracken Basic Concept Scale were paired, polarity (positive or negative) was assigned, and concept pairs were contrasted with 1,109 children ages three through seven to determine rate and sequence of polar concept acquisition. For 70 percent of the pairs the positive-pole concept was acquired before the negative-pole…

Comparison of results obtained for 62 normally developing preschool children on the Bracken Basic Concept Scale, the Preschool Language Scale, and the Slosson Intelligence Test revealed low to moderate correlations between the three tests. Results suggest the tests do not measure the same abilities and thus cannot be used interchangeably. (DB)