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Pure timing in temporal differentiation
Journal of the Experimental Analysis of Behavior
|March 1, 1985
Summary
Temporal control in response timing (temporal differentiation) was isolated by separating timing from responding. This revealed linear overestimation and Weber's law for sensitivity, resolving prior discrepancies in animal behavior research.
Area of Science:
- Behavioral neuroscience
- Psychology
- Animal behavior
Background:
- Temporal control is crucial in behavior, but its mechanisms differ between stimulus timing (discrimination) and response timing (differentiation).
- Previous studies showed conflicting results regarding sensitivity and scaling in temporal differentiation, particularly concerning fractional-exponent power relations in animals.
- Existing models often conflate timing and responding, obscuring the precise nature of temporal control in differentiation.
Purpose of the Study:
- To investigate the nature of temporal control in response timing (differentiation) by isolating the timing component.
- To resolve discrepancies between theoretical predictions and empirical findings in animal temporal differentiation experiments.
- To determine if Weber's law applies to temporal differentiation when timing is observed independently of the motor response.
Main Methods:
- A choice procedure was employed to separate the temporal control of a pause from the subsequent response.
- Temporal differentiation was analyzed as a tandem schedule of reinforcement, focusing on the pause interval.
- The timing of the pause (temporal control) was observed in isolation to measure accuracy and sensitivity.
Main Results:
- Pure temporal control in differentiation exhibited a linear overestimation of the standard duration.
- Sensitivity in isolated pause timing was accurately described by Weber's law.
- The fractional-exponent power relations and apparent differences in sensitivity between differentiation and discrimination were resolved.
Conclusions:
- Temporal control in differentiation is primarily exerted during the pause preceding the response, not the response itself.
- Isolating temporal control in differentiation reveals consistent principles, aligning with Weber's law and resolving prior empirical conflicts.
- These findings clarify the mechanisms of temporal control and offer a unified perspective on temporal discrimination and differentiation.