Reaction-Time, Flicker, and Affective Sensitiveness as Tests of Extraversion and Introversion

Introversion-extroversion.

“…The last comment is based upon a correlation of -.23±.04. This conclusion is verified by Washburn (102).…”

“…Introverts are said to be 'slow in movement.' Washburn (101,102) found that Is were significantly slower (200 <r versus 169 a) in simple reaction time. But curiously enough, there was little correlation between reaction time and the particular item on ' speed of movement' in the Marston test.…”

The perseverative tendency.

“…His findings were that the extreme groups of perseverators and non-perseverators were consistently and significantly more difficult and unreliable than the average groups. He found little agreement between Perseveration and Extroversion-Introversion, thus failing to confirm Washburn's findings (18). The ultimate problem of Perseveration as a characterological or personality trait is to discover whether particular kinds of materials, sensations, motives and behavior patterns persist or do not persist in specific personality or character types.…”