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Related Experiment Video

Updated: Jun 18, 2026

A Two-interval Forced-choice Task for Multisensory Comparisons

A Two-interval Forced-choice Task for Multisensory Comparisons

Published on: November 9, 2018

Time versus response indices affect conclusions about preference pulses.

Nathalie Boutros¹, Douglas Elliffe, Michael Davison

¹Psychology Department, The University of Auckland, City Campus, Private Bag 92019, Auckland, 1142, New Zealand. n.boutros@auckland.ac.nz

Behavioural Processes

|November 26, 2009

Summary

This summary is machine-generated.

When measuring preference changes after events, indexing by time is more accurate than by response behavior. This is crucial for understanding how different event types, like food or light cues, influence preferences over time.

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Area of Science:

Behavioral science
Psychology
Animal behavior

Background:

Understanding how events influence preferences is key in behavioral science.
Previous studies often indexed preference changes based on behavioral responses, which can be influenced by response latency.

Purpose of the Study:

To compare time-indexed and response-indexed preference pulses.
To investigate how different types of events (food vs. red keylight) affect preference measurements.
To determine the most accurate method for indexing preference changes following response-contingent events.

Main Methods:

Data collected from an experiment involving response-contingent food and red keylight stimuli.
Comparison of preference pulses indexed by time since event delivery versus by behavioral response occurrence.
Analysis of response latencies following different event types.

Main Results:

The interpretation of event effects on preference differed significantly between time-indexed and response-indexed methods.
Response-indexed pulses showed more extreme preferences after red keylight compared to food.
Time-indexed pulses showed more extreme preferences after food compared to red keylight.
Response latencies varied between event types, influencing the accuracy of response-indexed measures.

Conclusions:

Preference pulses should be indexed by time since the last event delivery for greater accuracy.
Time-indexing is particularly important when response-contingent events lead to systematically different response latencies.
This finding has implications for accurately measuring preference dynamics in behavioral research.