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Full-Text Articles in Social and Behavioral Sciences
Why Is It Difficult To Search For Two Colors At Once? How Eye Movements Can Reveal The Nature Of Representations During Multi-Target Visual Search, Michael John Stroud
Why Is It Difficult To Search For Two Colors At Once? How Eye Movements Can Reveal The Nature Of Representations During Multi-Target Visual Search, Michael John Stroud
Open Access Dissertations
Visual search consists of locating a known target amongst a field of distractors. Often times, observers must search for more than one object at once. Eye movements were monitored in a series of visual search experiments examining search efficiency and how color is represented in order to guide search for multiple targets. The results demonstrated that observers were very color selective when searching for a single color. However, when searching for two colors at once, the degree of similarity between the two target colors had varying effects on fixation patterns. Search for two very similar colors was almost as efficient …
Adhd Behavior Problems And Near- And Long-Term Scholastic Achievement Differential Mediating Effects Of Verbal And Visuospatial Memory, Dustin E. Sarver
Adhd Behavior Problems And Near- And Long-Term Scholastic Achievement Differential Mediating Effects Of Verbal And Visuospatial Memory, Dustin E. Sarver
Electronic Theses and Dissertations
The current study examined verbal and visuospatial memory abilities as potential mediators of the relationship among ADHD behavior problems and near- and long-term scholastic achievement. Scholastic achievement was measured initially and at 4-year follow-up in an ethnically diverse sample of children (N = 325). Nested composite (reading, math, language) and domain-specific reading structural equation models revealed that ADHD behavior problems exerted a negative influence on scholastic achievement measures, both initially and at follow-up. Much of this influence, however, was mediated by verbal memory’s contribution to near-term achievement, whereas visuospatial memory contributed more robustly to long-term achievement. For the domain-specific math …
Between-Object Superiority And The Effects Of Preview On Object-Based Attention In Occluded Objects, Yongna Li
Between-Object Superiority And The Effects Of Preview On Object-Based Attention In Occluded Objects, Yongna Li
Legacy Theses & Dissertations (2009 - 2024)
Object-based attention accounts assume that visual attention selects one object at a time and more efficiently processes properties belonging to the attended object relative to properties belonging to different objects. Within-object superiority (faster RTs and fewer errors for targets on the same object than for targets on different objects) supports object-based attention accounts. However, a contrasting effect, between-object superiority, has also been found. The present nine experiments were designed to distinguish between within-object and between-object superiority effects in objects with occlusion. The present results showed that between-object superiority can be obtained for occluded objects and that this effect is influenced …
The Influence Of Emotion On Attention : Examining The Processing Of Negative And Positive Emotion Words In The Dot Probe Task, Tina Sutton
Legacy Theses & Dissertations (2009 - 2024)
The influence of emotion on attention has been examined more closely in recent years using a variety of paradigms. Öhman (1993) suggested that participants more readily pay attention to negative information than neutral information. The current work was designed to expand upon these findings by examining both negative and positive emotion word processing in a non-clinical population using the dot probe task. Experiments 1a and 1b examined the supraliminal and subliminal processing of negative and positive emotion words presented in separate blocks. The results revealed that participants responded faster to the probe when it appeared in the same location as …