Accuracy and speed feedback: global and local effects on strategy use.
BACKGROUND/STUDY CONTEXT: Skill acquisition often involves a shift from an effortful algorithm-based strategy to more fluent memory-based performance. Older adults' slower strategy transitions can be ascribed to both slowed learning and metacognitive factors. Experimenters often provide feedback on response accuracy; this emphasis may either inadvertently reinforce older adults' conservatism or might highlight that retrieval is generally quite accurate. Response time (RT) feedback can lead to more rapid shift to retrieval (Hertzog, Touron, & Hines, 2007, Psychology and Aging, 22, 607-624).


METHODS
This study parametrically varied trial-by-trial feedback to examine whether strategy shifts in the noun-pair task in younger (M = 19) and older (M = 67) adults were influenced by type of performance feedback: none, trial accuracy, trial RT, or both accuracy and RT.


RESULTS
Older adults who received accuracy feedback retrieved more often, particularly on difficult rearranged trials, and participants who receive speed feedback performed the scanning strategy more quickly. Age differences were also obtained in local (trial-level) reactivity to task performance, but these were not affected by feedback.


CONCLUSIONS
Accuracy and speed feedback had distinct global (general) influences on task strategies and performance. In particular, it appears that the standard practice of providing trial-by-trial accuracy feedback might facilitate older adults' use of retrieval strategies in skill acquisition tasks.
a Department of Psychology , University of North Carolina at Greensboro , Greensboro , North Carolina , USA.
Dayna R
DR
Touron
Christopher
C
Hertzog
D000368:Aged; D000375:Aging / Q000523:psychology*; D001288:Attention / Q000502:physiology*; D005260:Female; D006801:Humans; D008297:Male; D008568:Memory / Q000502:physiology*; D011939:Mental Recall / Q000502:physiology*; D010153:Paired-Associate Learning / Q000502:physiology*; D011930:Reaction Time; D012054:Reinforcement, Psychology; D015203:Reproducibility of Results; D055815:Young Adult