title: Teaching coin equivalence to the mentally retarded.
abstract: A program was designed to teach coin equivalence to mentally retarded adolescents. Coin equivalence was defined as choosing several different combinations of coins to equal specified target values. A pretest-posttest matched-groups design was employed with an experimental group receiving the monetary training, and a no-training control group. A multiple baseline across coin-counting responses was also incorporated in the experimental group. Training was divided into six stages, each teaching one specific method of combining coins to equal 10 target values from 5 cents through 50 cents. A three-component response chain was used, requiring (a) naming, (b) selecting and counting, and (c) depositing target monetary values into a coin machine. Experimental subjects improved significantly in coin equivalence performance and maintained their skill on follow up tests; control subjects did not.
mesh_terms: D000293:Adolescent; D004467:Economics; D004495:Education of Persons with Intellectual Disabilities; D005260:Female; D006801:Humans; D008297:Male; D008433:Mathematics; D012153:Retention, Psychology