Social and Behavioral Sciences Commons^™

Properties Of Perceptual Motor After-Effects In Visuo-Spatial Tasks, Ben Kajaste

Electronic Thesis and Dissertation Repository

A series of experiments were conducted with the general theme and aim of exploring some of the yet to be determined properties of perceptual motor processing after-effects in visuo-spatial tasks. Using a variety paradigms, procedures and methods of analysis, numerous factors of interest were manipulated and examined to determine their implications related to how we process, store, make decisions and execute task requirements when presented with both relevant and irrelevant visuo-spatial information.

Experiment 1 investigated how distractor-generated response retrieval occurs; either via ‘inherent’ processing of high association strength links, or the application of task assignment rules (i.e., response selection determinants) …

The Role Of Probe-Trial Distractors In The Production/Removal Of The Spatial Negative Priming Effect, Peter D. Haworth

Electronic Thesis and Dissertation Repository

In spatial negative priming (SNP) tasks, trials are presented in pairs; first the ‘prime’, and then the ‘probe’. Target and/or distractor events appear on both trials and probe target reaction time is significantly lengthened when it arises at a former distractor-occupied location (ignored-repetition [IR] trial), relative to when it appears at a new location (control [CO] trial). This latency inequality, which is not inevitable, defines the SNP effect. Here, we examined the influence of prime and probe trial distractor identity similarity on restoring the SNP effect when its prevention was successfully motivated by the use of a .25 (distractor present)/.75 …