Abstract
The accuracy with which a rate of digit count was estimated as 1 digit/sec. was assessed in relation to the sex, age, and selected personality characteristics of Ss Marginally significant relationships between time-estimation accuracy data and age were found for each sex. Women tended to be slightly less accurate and more variable in their estimations than men. Few scores derived from the 16 PF Questionnaire were associated with time-estimation accuracy. The findings serve to confirm the inconsistencies existing in the time-estimation literature and point to the necessity of further research examining the interaction of variables before a theory relating personality characteristics to time-estimation performance may be attempted.

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