PHD, Kent State University, 2019, College of Arts and Sciences / Department of Psychological Sciences
When shown a familiar and a novel object and asked to pick the referent of a novel label, even one-year-olds tend to favor the novel object (Halberda, 2003; Mervis & Bertrand, 1994). However, this so-called disambiguation effect becomes stronger as children develop through preschool age (Lewis & Frank, 2015). Advances in metacognition may play a role in this developmental trend. Preschoolers' awareness of their own lexical knowledge is associated with the strength of the disambiguation effect (Merriman & Schuster, 1991; Merriman & Bowman, 1989; Wall, Merriman, & Scofield, 2015). It is also associated with whether children can solve purely metacognitive forms of the disambiguation problem (Slocum & Merriman, 2018; Henning & Merriman, 2019). The current experiments tested the hypothesis that as the number of choices in a disambiguation problem increases, the frequency of correct response declines more sharply for children who lack awareness of lexical knowledge than for children who possessed it. The results of the first two experiments supported the main hypothesis. Two experiments also showed that awareness of lexical knowledge was associated with a more gradual increase in latency of correct solutions as number of choices increased. In Experiment 3, children's eye movements were recorded as they attempted to solve 3-, 4-, 5-, and 6-choice problems. Various aspects of children's eye movements were analyzed, including the number of familiar object foils checked, the number of revisits to the target, and the proportion of looking time spent on the target object. The current experiments advance our insight into why the “awareness-of-knowledge advantage” in solving disambiguation problems tends to increase as number of choices increases.
Committee: William Merriman PhD (Advisor); Clarissa Thompson PhD (Committee Member); Jeff Ciesla PhD (Committee Member); Bradley Morris PhD (Committee Member); Sarah Rilling PhD (Committee Member)
Subjects: Cognitive Psychology; Developmental Psychology; Psychology