Repetition priming can be driven by the encoding and retrieval of
stimulus–response (S–R) bindings. When a previously encoded S–R binding is
retrieved, and is congruent with the response currently required, it can bias
response-selection processes towards selecting the retrieved response, resulting
in facilitation. Previous studies have used classification tasks at retrieval.
Here, two (or more) response options are competing, and it is likely that any
evidence (e.g., an S–R binding) in favour of one option will be utilized to
effect a decision. Thus, S–R effects are likely to be seen when using such a
task. It is unclear whether such effects can be seen under conditions of higher
response certainty, when participants are explicitly cued to make a response.
Across two experiments, evidence for a modulating influence of S–R bindings is
seen despite using a response cueing method at retrieval to minimize response
uncertainty and despite stimuli being task irrelevant. Finally, the results
suggest that responses within these S–R bindings are coded at the level of left
versus right hand, and not a more fine-grained within-hand thumb versus index
finger. The results underline the resilience of S–R effects, suggesting that
they are present even under conditions where no explicit object-oriented
decision is required.