AN EXPLORATION INTO DIFFERENCES BETWEEN THE LEARNING OF VARIOUS AGE GROUPS WAS CONDUCTED TO OBTAIN DATA OF DEVELOPMENTAL PROCESSES FOR THE FORMATION OF LEARNING SET. THE OBJECT-QUALITY DISCRIMINATION ...LEARNING SET WAS STUDIED TO SEARCH FOR SYSTEMATIC RESPONSE PATTERNS, AND TO EXAMINE AGE DIFFERENCES. THE SAMPLES USED IN THIS STUDY WERE 53 NURSERY SCHOOL CHILDREN, 53 FIFTH GRADERS, 57 COLLEGE FRESHMEN, AND 209 AGED PEOPLE. EACH WAS GIVEN PRACTICE ON NUMEROUS TWO-STIMULI PROBLEMS. COMPARISONS ACROSS AGE LEVELS WERE CONDUCTED AND AN AGE TREND IN RATE OF SET ACQUISITION OBTAINED. (RS)
The complete solutions of the spin generalization of the elliptic Calogero Moser systems are constructed. They are expressed in terms of Riemann theta-functions. The analoguous constructions for the ...trigonometric and rational cases are also presented.
"Several levels of radiation dosage were used, and age at irradiation was varied in seven steps from 2 to 24 days post partum. Decrements were a direct function of radiation dosage. Radiation during ...the first 4 days of life produced the greatest deficits in maze performance. Irradiation beyond 18 days of age produced no significant performance decrements." From Psyc Abstracts 36:01:1DM53L.
"Object-discrimination learning-set functions were obtained from two groups of rhesus monkeys, one group receiving 3 trials per problem, the other receiving 12 trials per problem throughout. No ...differences were found between the two groups when Trial 2 performance was measured over successive blocks of trials. Learning-set functions from several similar experiments were then compared with the functions obtained in the present study. The results of this survey suggest that from 3 trials per problem to 12 trials per problem, an equivalent number of trials yields equivalent learning-set development, and that at some point beyond 12 tr/p the effect of an equivalent number of trials gradually declines." From Psyc Abstracts 36:02:2EJ96L.
Three experiments are reported testing the relational theory, configurational theory and the absolute theory of discrimination learning. 7 chimpanzees served as subjects in a two-choice ...discrimination apparatus. The stimulus patterns differed in form, size and color. Results showed: "When a previously rewarded object was paired with a previously nonrewarded object, the former was chosen in only 68% (average) of the tests . . . . When two previously rewarded objects, or two previously nonrewarded objects, were paired, some nondifferentially reinforced stimulus aspect, which varied among S's, was chosen in from 62 to 98% of the tests."
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