Encouraging top-down attention in visual search:A developmental perspective.

Four experiments are reported in which 60 younger children (7-8 years old), 60 older children (10-11 years old), and 60 young adults (18-25 years old) performed a conjunctive visual search task (15 per group in each experiment). The number of distractors of each feature type was unbalanced across displays to evaluate participants' ability to restrict search to the smaller subset of features. The use of top-down attention processes to restrict search was encouraged by providing external aids for identifying and maintaining attention on the smaller set.

Effects of homograph meaning frequency on semantic satiation.

This study examined the effects of homograph meaning frequency on semantic satiation within an ambiguity resolution paradigm. Participants received 3 homograph conditions: the concordant (QUICK-FAST-SPEEDY), discordant (HUNGER-FAST-SPEEDY) and neutral (CEILING-FAST-SPEEDY). On each trial, a prime (e.

Aging, imagery, and the bizarreness effect.

This study examined the bizarre imagery effect in young and older adults, under incidental and intentional conditions. Intentionality was manipulated across experiments, with participants receiving an incidental free recall test in Experiment 1 and an intentional test in Experiment 2. This study also examined the relation between working memory resources and the bizarreness effect.

Selective search for conjunctively defined targets by children and young adults.

Two experiments were conducted to investigate age-related differences in visual search for targets defined by the conjunction of two features. In the experiments, 7- and 10-year-old children and young adults searched visual displays for a black circle among distractors consisting of gray circles and black squares. In Experiment 1 (N = 60), we compared performance in the standard search task (where an equal number of each type of distractor appeared across all display sizes) with performance in a modified search task (where the number of black squares was fixed at two and the number of gray circles increased as the display size increased).