Poster A125, Saturday, March 25, 5:00 – 7:00 pm, Pacific Concourse
Influence of confirmed and violated expectations on recognition confidence in a semantic retrieval task
Alexandra M. Gaynor1, Elizabeth F. Chua1,2; 1The Graduate Center, The City University of New York, 2Brooklyn College, The City University of New York
When making confidence judgments about the accuracy of one’s own memory, individuals rely on both mnemonic cues during retrieval and also on information-based cues, such as beliefs about competence or test difficulty (Koriat et al., 2008). Individuals have poorer performance and lower confidence in their responses when expectations about memory are violated during recognition tests (Jaeger, Cox & Dobbins, 2012). Additionally, invalid cues in episodic memory tasks have been associated with increased activation in prefrontal and parietal regions (O’Connor, Han & Dobbins, 2010). In an fMRI study, we used invalid and valid cues about question difficulty during a general knowledge task to determine how prefrontal and parietal activity is modulated by external cues during semantic retrieval. Each trial began with the presentation of a cue about the difficulty of the upcoming question (‘Hard’, ‘Easy’, or no cue), which remained onscreen during presentation of the general knowledge question with four possible answer choices. Each question was followed by a confidence judgment in which subjects rated their confidence in having chosen the correct answer. Cues were valid 50% of the time. Preliminary whole brain analyses showed greater dorsomedial prefrontal (dmPFC) activity during invalid cueing as compared to valid cueing during the confidence trial. These findings are consistent with past research implicating the dmPFC in a frontoparietal network that shows greater activity during invalid as compared to valid cueing, and may reflect conflict monitoring and cognitive control necessary to respond when external cues violate an individual’s expectations.
Topic Area: LONG-TERM MEMORY: Semantic