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Article Dans Une Revue Quarterly journal of experimental psychology (2006) Année : 2017

Evidence for the contribution of a threshold retrieval process to semantic memory.

Résumé

It is widely held that episodic retrieval can recruit two processes: a threshold context retrieval process (recollection) and a continuous signal strength process (familiarity). Conversely the processes recruited during semantic retrieval are less well specified. We developed a semantic task analogous to single-item episodic recognition to interrogate semantic recognition receiver-operating characteristics (ROCs) for a marker of a threshold retrieval process. We fitted observed ROC points to three signal detection models: two models typically used in episodic recognition (unequal variance and dual-process signal detection models) and a novel dual-process recollect-to-reject (DP-RR) signal detection model that allows a threshold recollection process to aid both target identification and lure rejection. Given the nature of most semantic questions, we anticipated the DP-RR model would best fit the semantic task data. Experiment 1 (506 participants) provided evidence for a threshold retrieval process in semantic memory, with overall best fits to the DP-RR model. Experiment 2 (316 participants) found within-subjects estimates of episodic and semantic threshold retrieval to be uncorrelated. Our findings add weight to the proposal that semantic and episodic memory are served by similar dual-process retrieval systems, though the relationship between the two threshold processes needs to be more fully elucidated.

Dates et versions

hal-01569411 , version 1 (26-07-2017)

Identifiants

Citer

Maria Kempnich, Josephine A Urquhart, Akira R. O’connor, Chris J A Moulin. Evidence for the contribution of a threshold retrieval process to semantic memory.. Quarterly journal of experimental psychology (2006), 2017, 70 (10), pp.2026-2047. ⟨10.1080/17470218.2016.1220607⟩. ⟨hal-01569411⟩
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