Drive times habit in human eyelid conditioning

Do D and H multiply to determine performance in human conditioning?

“…Similarly, in studies employing UCS intensity as the independent variable, there is no evidence that higher D results in greater individual differences. In one such study (Prokasy & Allen, 1966), reliably greater individual differences were observed in the low-UCS-intensity group, contrary to prediction.…”

“…Since there was a floor effect operating with these studies, it is worth noting that the only study in the literature (Prokasy & Allen, 1966) in which comparisons were made appropriately in E units provided no evidence of divergence in two separate comparisons of high-and low-UCS-intensity groups. In this study, the subjects were given 300 conditioning trials either with the typical conditioning procedure or with the masking procedure developed by Spence, Homzie, and Rutledge (1964).…”

Unconditioned stimulus intensity and asymptotic performance in human eyelid conditioning

“…This is because the studies they reviewed are generally confined to those with 100 or fewer conditioning trials. The clear evidence (e.g., Prokasy, 1965;Prokasy & Allen, 1966) of performance increments beyond 100 trials precludes definitive statements about asymptotes based on studies incorporating fewer than 150 or 200 trials. Even in the present study, with 300 trials, it was not evident that the NCs had asymptoted.…”

“…The purpose of this note is to report relevant data from a study in which asymptotic performance was approximated and in which overall differences as a function of UCSI were obtained. SInOR the study was reported elsewhere (Prokasy & Allen, 1966). the entire procedure wUI not be detailed.…”

“…However, since Spence and Platt conducted their comparisons on data from studies in which asymptotic performance was DOt assured, they failed to come to grips with Burstein's conclusion that, given Cs, asymptotic performance is not affected by UCSl.The purpose of this note is to report relevant data from a study in which asymptotic performance was approximated and in which overall differences as a function of UCSI were obtained. SInOR the study was reported elsewhere (Prokasy & Allen, 1966). the entire procedure wUI not be detailed.…”