An attempt was made to duplicate Rosvold and Mishkin's finding of clear differentiation between groups, using a modified Yerkes Multiple-Choice Test with 23 lobotomized and 22 unlobotomized schizophrenics for whom scores were available on 10-factored aptitude tests and 2 Wechsler-Bellevue scales. Though marked intergroup differences appeared on the aptitude tests, none appeared on the Yerkes te...

Abstract This aptitude–treatment interaction study investigated the extent to which explicit and implicit cognitive abilities are differentially related learning outcomes under two corrective feedback conditions. One hundred thirteen intermediate English learners of Spanish were randomly assigned an (recast), (explicit correction), or control group after completing tests from aptitude batteries...

Learning minimally invasive surgery (MIS) differs substantially from learning open surgery and trainees differ in their ability to learn MIS. Previous studies mainly focused on the role of visuo-spatial ability (VSA) on the learning curve for MIS. In the current study, the relationship between spatial memory, perceptual speed, and general reasoning ability, in addition to VSA, and performance o...

Although the high-variability training method can enhance learning of non-native speech categories, this can depend on individuals' aptitude. The current study asked how general the effects of perceptual aptitude are by testing whether they occur with training materials spoken by native speakers and whether they depend on the nature of the to-be-learned material. Forty-five native Dutch listene...

The topic of the workshop from which this volume comes, “Individual Differences in Second Language Learning,” is timely and important for both practical and theoretical reasons. The practical reasons are obvious: While many people have some knowledge of a second or further language, there is enormous variability in how well they know these languages. Much of this variability is, of course, like...