Using the ''between-grade levels'' regression discontinuity design, this study examined the hypothesized differential sensitivity of logico-mathematical (LM) and infralogical (IL) operational tasks to the effects of chronological age and first grade schooling in a sample of 580 1st and 2nd grade Israeli children. The results indicate that the…

This study estimated the independent effects of age and schooling in grades 7-9 on scores obtained on invalid conditional and class syllogisms. The results, which point to a negative, albeit small, effect of out-of-school experience and to a sizeable positive effect of schooling, replicate previous findings in a different age range and support the…

Examined hypothesis that experiences unique to schooling account for improved performance on invalid conditional syllogisms with age. Found small negative effect from out-of-school experiences and considerable positive effect of schooling; hence, unlike other cognitive tasks in which schooling operates in same direction as out-of-school…