20 Ss participated in 3 experimental sessions; 10 thresholds, 5 ascending and 5 descending, were obtained on each of 2 oral sites (tongue tip and tongue dorsum) in each session. Results indicate that Ss' two-point limens are very consistent across sessions when obtained on the tongue tip. However, they exhibited poor reliability on the tongue dorsum. A relationship between degree of sensitivity of an oral site and the consistency of two-point thresholds at that site is offered to explain the differences in the present study, and suggestions for testing this proposed relationship are offered.
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