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An Investigation of the Relationship Between Inhibitory Motor Control and Low and High Trait Impulsivity in Non-Clinical Adults

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An Investigation of the Relationship Between Inhibitory Motor Control and Low and High Trait Impulsivity in Non-Clinical Adults Edith Cowan University Research Online Theses : Honours Theses 2007 An investigation of the relationship between inhibitory motor control and low and high trait impulsivity in non-clinical adults Lindsay Vibert Edith Cowan University Follow this and additional works at: https://ro.ecu.edu.au/theses_hons Part of the Cognitive Psychology Commons Recommended Citation Vibert, L. (2007). An investigation of the relationship between inhibitory motor control and low and high trait impulsivity in non-clinical adults. https://ro.ecu.edu.au/theses_hons/1140 This Thesis is posted at Research Online. https://ro.ecu.edu.au/theses_hons/1140 Edith Cowan University Copyright Warning You may print or download ONE copy of this document for the purpose of your own research or study. The University does not authorize you to copy, communicate or otherwise make available electronically to any other person any copyright material contained on this site. You are reminded of the following: Copyright owners are entitled to take legal action against persons who infringe their copyright. A reproduction of material that is protected by copyright may be a copyright infringement. Where the reproduction of such material is done without attribution of authorship, with false attribution of authorship or the authorship is treated in a derogatory manner, this may be a breach of the author’s moral rights contained in Part IX of the Copyright Act 1968 (Cth). Courts have the power to impose a wide range of civil and criminal sanctions for infringement of copyright, infringement of moral rights and other offences under the Copyright Act 1968 (Cth). Higher penalties may apply, and higher damages may be awarded, for offences and infringements involving the conversion of material into digital or electronic form. An Investigation of the Relationship Between Inhibitory Motor Control and Low and High Trait Impulsivity in Non-clinical Adults Lindsay Vibert Supervisor: Dr. Chris Theunissen A Thesis Submitted in Partial Fulfilment of the Requirements for the Award of Bachelor of Arts (Psychology) Honours, Faculty of Computing, Health and Science, Edith Cowan University Submitted October, 2007 USE OF THESIS The Use of Thesis statement is not included in this version of the thesis. Impulsivity Motor Inhibition 111 COPYRIGHT AND ACCESS DECLARATION I certify that this thesis does not, to the best of my knowledge and belief: 1. incorporate without acknowledgement any material previously submitted for a degree or diploma in any institution of higher education; ii. contain any material previously published or written by another person except where due reference is made in the text; or. iii. contain any defamatory material. Signed: Date: ------------------- Impulsivity Motor Inhibition IV Acknowledgements I would like to express my sincerest gratitude to Dr. Chris Theunissen for his supervision, support and sage advice throughout the year. The completion of my thesis is to a large extent due to his guidance and breadth of knowledge. Also, I would like to thank my co-supervisor Dr. Greg Dear for his assistance with the many statistical matters that arose throughout the year. I wish to offer my heartfelt thanks to my family, Joy, Kelly and Kyle for your love and support during the year. A very big thank you the following ECU Psychology staff who assisted me in many different ways this year: Dr. Justine Dandy for the 'use' of her 3rd year psychology class as participants; Ho for providing excellent computer support; the wonderful administrative staff of Carole, Trish and Sue; Dr. Di MacKillop for her timely peer support and especially to my two examiners, Drs. A. Campbell and E. Gringart for their constructive feedback. Also, I wish to thank Dr. J. Badcock from the University of Western Australia, for permitting me the use of the Stop-signal program. And finally, (but by no means lastly), a huge expression of gratitude to the 73 students, family and friends, who gave so willingly of their time as participants in the experimental aspects of my research. Without you there would have been nothing at all to write about. Impulsivity Motor Inhibition v Table of Contents Page Title Page ................................................................................................................... i Use of Thesis ............................................................................................................ ii Copyright and Access Declaration ......................................................................... .iii Acknowledgements ................................................................................................. iv Table of Contents ..................................................................................................... v Manuscript One: Literature Review Motoric Inhibition: Self-Reported Impulsivity and the Ability to Inhibit Action Title Page .................................................................................................................. 1 Abstract .................................................................................................................... 1 Introduction .............................................................................................................. 2 Impulsivity ............................................................................................................... 5 Measurement ofImpulsivity ............................................................................. 7 Inhibition ................................................................................................................ 11 Measurement ofInhibition ............................................................................. 15 Summary ................................................................................................................ 18 References .............................................................................................................. 21 Manuscript Two: Research Report ........................................................................ 32 High and Low Trait Impulsivity in Non-clinical Adults and Motor Inhibition Control Title Page ................................................................................................................ 32 Abstract .................................................................................................................. 33 Introduction ............................................................................................................ 34 Stop-Signal Paradigm .................................................................................... 35 The Cutrent Study ........................................................................................... 38 Method ................................................................................................................... 40 Participants .................................................................................................... 40 Materials ......................................................................................................... 40 Barratt impulsiveness scale . ........................................................................ 40 Stop-signal task. ........................................................................................... 41 Procedure ....................................................................................................... 41 Statistical Analysis.......................................................................................... 45 Impulsivity Motor Inhibition VI Demographic Variables .................................................................................. 45 Demographic Characteristics ofthe Sample ............................................... 46 Table 2 ......................................................................................................... 48 Mean Reaction Times in Milliseconds (SD), Standard Deviations and Pe1jormance Accuracy (in%) to the Primary 'go' Task ............................ .48 Stop-Signal Reaction Times ............................................................................ 48 Estimated Stop Signal RT (Mean, SD), Probability ofInhibition (POI) ..... 49 Inhibition Functions ....................................................................................... 49 Correlation Analysis ofStop-Signal Reaction Time and Motor Subscales .... 51 Table 4 ......................................................................................................... 51 Partial Correlation Coefficients Between High and Low Groups on SSRT51 Correlation ofStop-Signal Results from the Current Study with Similar Studies ............................................................................................................. 52 Comparison ofCurrent Study SSRT and the LijffTjt et al. (2004) and Rodriguez-Fornells et al. (2002) Studies ..................................................... 53 Appendix A ............................................................................................................ 68 Participant Information Form ................................................................................. 68 Appendix B ............................................................................................................ 70 Pmiicipant Informed Consent Form ....................................................................... 70 Appendix C ...........................................................................................................
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