[CaBSSem] FW: CaBSSem change: Tanaka

Stephen Lindsay slindsay at uvic.ca
Tue Sep 20 11:56:53 PDT 2022


Apologies, but the Meet the Department event starts at 2:30, not 3.

Steve

From: Stephen Lindsay
Sent: September 20, 2022 11:45 AM
To: psychat <Psychat at lists.uvic.ca>; 'cabssem at lists.uvic.ca' <cabssem at lists.uvic.ca>
Subject: CaBSSem change: Tanaka


As previously announced, due to the Meet the Department event (Friday 23 Sept from 3 to 4 in Cornett A229), CaBSSem will start shortly after 4 this week.  Location Cornett A228 (Reading Room).  But due to factors beyond her control Jordana Wynn has rescheduled her debut CaBSSem to later in the fall, and Jim Tanaka has gallantly stepped forward to host a session on Individual differences in object category learning and retention: Steep versus shallow learners



I am hoping that many will attend FTF, but we will also livestream the sessions at

https://uvic.zoom.us/j/84838166840?pwd=YndMWWFNUlllV0FuQjVnMndPMUpyZz09

Meeting ID: 848 3816 6840

Password: 982785



The schedule is still mostly open after September:  See https://onlineacademiccommunity.uvic.ca/lindsaylab/wp-content/uploads/sites/4861/2022/08/Schedule-for-UVic-PSYC-577-Winter-2022.pdf   If you would like to host a session of CaBSSem (or recommend someone else as host), please email me.  Dates are assigned on a first-come/first-served basis.

Abstract:  What is the connection between category learning and category retention? In category training studies, it is assumed that once participants are trained to a specified criterion, they are equivalent in their categorization abilities. However, little work has examined how individual differences in the rate of category acquisition might affect the retention of category knowledge in the post-acquisition phase. In this study, we investigate the initial trainability of participants as a predictor of their ability to retain category knowledge. In Phase 1 of the study, participants were trained to classify images of warblers into one of four species categories (Magnolia, Cape May, Prairie, Townsend). Training continued until participants achieved a 90% accuracy criterion. Multilevel modeling was used to characterize participants as having either a "steep" or "shallow" acquisition slope. The slopes were computed based on the learner's initial baseline performance in the first block of learning trials and the number of trials required to reach the 90% criterion. Subsequently, in Phase 2 of the study, participants were asked to categorize new images of the four warbler species. Their category abilities were tested at three time points: immediately, 1 day and 2 days after category training. The key result was that relative to the original 90% training criterion, steep learners improved their categorization performance to 97%. In contrast, the category performance of the shallow learners declined to 80% - below the original training criterion of 90%. Results show that category learning and category retention are intimately linked, where the rate by which someone acquires a perceptual category predicts how they will retain category knowledge over time. Adopting an individual differences perspective, these findings suggest that visual category learning may be a stable, trait-like characteristic that measures a person's ability to acquire and retain category knowledge


Regards,

Steve


=========================
D. Stephen Lindsay, Ph.D
Professor and Chair
Department of Psychology
University of Victoria

Pronouns: He/him

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