reported that 75% of the population in the United States were

extraverted. McCaulley, Macdaid, and Kainz suggested that this

difference may be due to a bias toward introverted intuitives in the

CAPT data bank.

 The literature contains several studies of type and memory.

Carskadon (1979) studied memory for names as well as other variables.

He found a significant difference (p < .001) between extraverts and

introverts on memory for names, with the extraverts having the higher

mean. The other behaviors that he studied at the same time were inter-

personal spacing, gestures, and amount of silence in conversation. He

found no significant differences in the number of gestures used by

students. He did, however, find differences in the other behaviors.

Introverted students differed significantly (p < .05) on interpersonal

space from extraverted students, with the introverts taking more. As

would be expected, introverted students also differed significantly

(p < .01) on amount of silence.

 In another study on memory Dunn (1985) found no differences in

differential memory capacity (recall data) or differing logical

strategies (clustering data) between various MBTI types using a one-way

ANOVA. He does not report if he controlled for theoretical congruence

and suggests that previously reported lower IQ tests and lower academic

performance between types may be due to some "cognitive or motivational

ability other than pure memory" (p. 32).

 Carlson has published a series of studies on Jungian typology that

deserve attention. In the first study she reported the use of basic

memory processes. Based on the theory, the investigators (Carlson &