Bh. Basden et al., A COMPARISON OF GROUP AND INDIVIDUAL REMEMBERING - DOES COLLABORATIONDISRUPT RETRIEVAL STRATEGIES, Journal of experimental psychology. Learning, memory, and cognition, 23(5), 1997, pp. 1176-1191
M. S. Weldon and K. D. Bellinger (1997) showed that people who collabo
rate on a recall test (collaborative group) perform much more poorly t
han the same number of people tested individually (nominal group). Fou
r experiments tested the hypothesis that retrieval-strategy disruption
underlies this collaborative inhibition when categorized lists are st
udied. Collaborative groups performed worse than nominal groups when c
ategories were large (Experiment 1) and when category names were provi
ded at recall (Experiment 2). However, collaborative and nominal-group
recall were equivalent when participants retrieved nonoverlapping par
ts of the list (Experiment 3) and when participants were forced to org
anize their recall by category (Experiment 4). Clearly, disorganized r
etrieval can account for collaborative inhibition with the materials a
nd procedures used here.