Abstract
Predictions derived from Eysenck's theory of personality were tested in two samples by relating extraversion scores to library study locations, frequency of study breaks, and self-report of factors which influence study location. The predicted main effects for study location were found, with extraverts occupying locations that provided greater external stimulation. Positive correlations were consistently found between extraversion and preferred level of noise, preferred level of socializing opportunities, and rated importance of socializing opportunities. The prediction that extraverts would take more frequent studybreaks was supported in Sample 1 but not replicated in Sample 2. The data are interpreted as providing direct support for Eysenck's theory of behavioral differences and mixed indirect support for his theory of neurological differences between introverts and extraverts.
Cognitive Theories

The cognitive school is probably best defined by exclusion: if it ain't biological, behaviourist or humanist, it's cognitive (I'm including information-processing models here).

It all starts with Gestalt theories [Wertheimer, Köhler and Koffka, and with only the vaguest connection with Gestalt therapy (Perls)]: originally theories of perception, interested in the way the brain imposes pattern on the perceived world, Gestalt moved into problem-solving learning.
It is also much influenced by the developmental psychology of Piaget (but also read Donaldson (1984) if reading Piaget), focusing on the maturational factors affecting understanding. The accommodation/assimilation dialectic is the part most useful for understanding grown learners.
Broadly, cognitive theory is interested in how people understand material, and thus in; aptitude and capacity to learn (thus fringing onto psychometrics and testing), and learning styles (the reference is to one of