Nothing else matters: Stimulus-response binding and retrieval is independent of affective consequences.

Abstract

Stimulus-response binding and retrieval (SRBR) is a fundamental mechanism driving behavior automatization. In five experiments, we investigated the modulatory role of affective consequences (AC) on SRBR effects to test whether binding/retrieval can explain instrumental learning (i.e., the "law of effect"). SRBR effects were assessed in a sequential prime-probe design, with an orthogonal variation of response relation (response repetition vs. change) by distractor relation (word repetition vs. change). Binding/retrieval effects are measured by an interaction of the two factors, with distractor repetitions inducing a retrieval of the prime episode and a tendency to re-enact the previous response, which leads to facilitation in conditions where the response must be repeated, but leads to interference when the required response changes from prime to probe. Positive, neutral, or negative events signaling changes in points that were linked to monetary gains or losses were delivered after every trial to investigate whether AC modulate the binding/retrieval effect. Consistently across all five experiments (total N= 466), robust SRBR effects were obtained, but we did not find any evidence for an affective modulation of these binding/retrieval effects, indicating that these effects are automatic and independent of AC. In particular, Experiment 5 demonstrated a dissociation between instrumental learning via AC (reflected in higher frequencies of rewarded responses) and SRBR, which was not influenced by AC following a response. (PsycInfo Database Record (c) 2024 APA, all rights reserved).