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ADHD and Cognitive Functioning: Multi-Mediation by Personality and Behavioral Variability

Frum, Philip C. and Pierce, Thomas W. (2012) ADHD and Cognitive Functioning: Multi-Mediation by Personality and Behavioral Variability. Masters thesis, Radford University.

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Abstract

In statistical tests involving data in a time-series, proportions of variability accounted for by anything other than the proposed instrument of measurement is thought to be random. Previously obtained results acquired through spectral analysis have suggested that there is actually a systematic pattern within the data. This study investigates the possibility of this pattern of results being a mediator, between the relationship between ADHD and cognitive functioning. Personality is also hypothesized to be a second mediator between these variables, following relationships found in previous literature. 79 undergraduate students participated in this study of multi-mediation to assess their ADHD, personality, and cognitive performance scores. Spectral analysis is used to detect if periodic patterns are present in the time-series residuals, and the spectral density slope calculated indicates the presence of “pink noise”. This result supports previous findings on systematic cyclical behavior in time-series analysis. Correlational analyses reveal relationships between the spectral density slope and the discussed variables. Interestingly, correlational analyses found no greater number of significant relationships between ADHD variables and cognitive performance variables than would be found by chance alone, thus nullifying the need for a mediation test. Personality variables held significant relationships with ADHD, as found in previous studies. Personality also had a significant relationship with cognitive performance. Strengths and limitations of the results of the study are discussed in detail.

Item Type: Thesis (Masters)
Subjects: B Philosophy. Psychology. Religion > BF Psychology
Divisions: UNSPECIFIED
Depositing User: Mr. Philip Frum
Date Deposited: 20 Feb 2013 20:06
Last Modified: 20 Feb 2013 20:06
URI: http://wagner.radford.edu/id/eprint/64

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