The Influence of Parenting Style on Adolescent Substance Use by Matin Ghayour Minaie M.Sc., B.Sc. Submitted in fulfilment of the requirements for the degree of Doctor of Philosophy Deakin University December, 2014 vi Acknowledgements “No duty is more urgent than that of returning thanks.” I would like to take this opportunity to express my gratitude to the people who have been instrumental in the successful completion of my PhD project. The guidance and support received from all the members who have contributed, has been vital for the success of the project. I am grateful for all their constant support and help. Foremost, I am heartily thankful to my primary supervisor, Professor John Toumbourou whose encouragement, patience, guidance and support from the initial phase to the final level, enabled me to finish my journey with lots of valuable experiences. He has not only been my PhD supervisor, but my mentor. I can’t say thank you enough for his tremendous support and help. Without his supervision and constant help this dissertation would not have been possible. I would also like to express my sincere appreciation and thanks to my co-supervisor, Associate Professor Ross King, for being there for me by encouraging me to continue and to achieve my goal. Without his moral support, motivating suggestions and encouragement, coordination of my project would have been an uphill struggle. Furthermore, I would like to acknowledge with much appreciation, the crucial role of the “Resilient Families” team, who gave their permission to use all the required data and other materials to complete the task. Data collection for the Resilient Families research program was initiated by paid research staff funded by the National Health and Medical Research Council (Project Grant 251721), the Alcohol Education and Rehabilitation Foundation, and the Grosvenor Settlement Philanthropic Trust. Parent recruitment was supported by pro bono work vii from the staff of Beaton Wellmark. Students and others completing studies using data from the Resilient Families research initiative are encouraged to contribute research tasks back to the study. The work for my PhD included serving on the Resilient Families data management and Wave 4 data collection teams. A special thanks goes to my team mates, Eva Yuen, Alison Mynard and Brendan Partridge, who helped me with data collection and gave suggestions about the academic writing. A special gratitude goes to my dear friends, Pauline Seitz for editing my thesis and Rachel Leung for assisting me with data analysis. Also to Maria Garcia, Emma McPhee and the academics of the School of Psychology who have become my friends and colleagues, I have grown knowing you all. I owe my deepest gratitude to my family for their endless love and support. Words cannot express how grateful I am to my mother and my father for all of the sacrifices they made for me to be here in the first place. Your well wishes and prayers have sustained me thus far. I would like to express appreciation for my beloved husband Kambiz who spent sleepless nights with me and was always my pillar of support, in a time when we were apart and living so far away, and when he joined me in Australia, thank you and I love you. Last but not the least; I would like to thank my one and only daughter Raha, who has given our lives a great incentive. She has been patient enough to be away from me for hours and hours on days to let me finish this PhD thesis. viii Table of Contents Acknowledgements…………………………………………………………………….. vi Table of Contents………………………………………………………….....……….. viii List of Tables…..………………………………………………………..………….… xii List of Figures….………..…………………………………………….…..…………. xiii Abstract…………...………………………………………………..…………….....… xiv CHAPTER ONE - THESIS OVERVIEW ......................................................................... 1 CHAPTER TWO - THEORETICAL INTRODUCTION ................................................. 7 2.1 Adolescence in human development ................................................................. 7 2.2 Human developmental theories ....................................................................... 10 2.3 The development of adolescent behavioural disorders ................................... 13 2.4 Social influences and attachments in adolescent development ....................... 14 2.5 Ecological systems influences on development .............................................. 16 2.6 Family systems and parent influences ............................................................. 20 2.7 Baumrind’s parenting styles ............................................................................ 21 2.8 Prevention science paradigm ........................................................................... 22 2.9 Critiques of prevention science ....................................................................... 24 2.10 Chapter summary ............................................................................................ 25 CHAPTER THREE - METHODOLOGICAL INTRODUCTION ................................. 26 ix 3.1 Introduction ..................................................................................................... 26 3.2 Longitudinal risk-focused research ................................................................. 26 3.3 Identifying predictors, risk factors and causal influence ................................ 28 3.4 Alternative family and parent observation methods........................................ 30 3.5 Sample design considerations ......................................................................... 32 3.6 Developmentally appropriate measurement in behavioural research.............. 33 3.7 Resilient Families study design ....................................................................... 36 3.8 Analysis ........................................................................................................... 42 3.9 Chapter summary ............................................................................................ 43 CHAPTER FOUR - SYSTEMATIC LITERATURE REVIEW ..................................... 44 Abstract……………………………………….……………….……………..45 4.1 Introduction ..................................................................................................... 46 4.2 Parenting styles................................................................................................ 47 4.3 Aims of the present chapter………………………….……………………….49 4.4 Method............................................................................................................. 50 4.5 Results ............................................................................................................. 51 4.6 Identification of the key dimensions of parenting style .................................. 60 4.7 Predictive effects of parenting dimensions and styles ..................................... 62 4.8 Moderation by culture and ethnicity ............................................................... 68 4.9 Family influences model ................................................................................. 68 4.10 Discussion ....................................................................................................... 70 4.11 Limitations....................................................................................................... 75 4.12 Conclusion ....................................................................................................... 76 x CHAPTER FIVE – THE INFLUENCE OF PARENTING STYLE ON ADOLESCENT ALCOHOL USE ............................................................................................. 78 Abstract……………………………………….……………….……………..80 5.1 Introduction ..................................................................................................... 81 5.2 Methods ........................................................................................................... 85 5.3 Analysis plan ................................................................................................... 90 5.4 Results ............................................................................................................. 91 5.5 Discussion ....................................................................................................... 96 5.6 Limitations..................................................................................................... 100 5.7 Implications for research and health promotion practice .............................. 101 5.8 Conclusions ................................................................................................... 102 CHAPTER SIX – THE INFLUENCE OF PARENTING STYLE ON ADOLESCENT CANNABIS USE .......................................................................................... 103 Abstract……………………………………….……………….…………....104 6.1 Introduction ................................................................................................... 105 6.2 Methods ......................................................................................................... 110 6.3 Analysis ......................................................................................................... 115 6.4 Results ........................................................................................................... 116 6.5 Discussion ..................................................................................................... 118 6.6 Limitations..................................................................................................... 121 6.7 Implications for research and health promotion practice .............................. 122 6.8 Conclusions ................................................................................................... 123 xi CHAPTER SEVEN – THE IMPACT OF ETHNICITY ON ADOLESCENT SUBSTANCE USE ...................................................................................... 124 Abstract……………………………………….……………….…………....125 7.1 Introduction ................................................................................................... 126 7.2 Methods ......................................................................................................... 133 7.3 Analysis ......................................................................................................... 138 7.4 Results ........................................................................................................... 139 7.5 Discussion ..................................................................................................... 142 7.6 Limitations..................................................................................................... 144 7.7 Conclusion ..................................................................................................... 145 CHAPTER EIGHT - INTEGRATED DISCUSSION ................................................... 146 8.1 Project overview and key integrated findings ............................................... 146 8.2 Implications of the systematic review ........................................................... 147 8.3 Baumrind’s parenting styles and child and adolescent development ............ 154 8.4 Prevention science and substance use prevention ......................................... 158 8.5 Study strengths and limitations ..................................................................... 161 8.6 Research and practice implications ............................................................... 163 8.7 Practical implications for school and family-based prevention .................... 164 8.8 Chapter summary .......................................................................................... 166 REFERENCES .............................................................................................................. 167 xii List of Tables Table 4.1. Major details of longitudinal studies examining impact of parenting style on adolescent substance use…………………………………………..………... 52 Table 4.2. Results of reviewed studies………………………………………………... 64 Table 5.1. Prevalences and item-response probabilities for each latent class of the final four-latent-class model………………………………………….……………92 Table 5.2. Descriptive statistics for the five Communities That Care (CTC) family scales at Wave 1 and percentage reporting alcohol use in Wave 1 and 3 of each latent class group…………………………………………………………...………93 Table 5.3. Logistic regression predicting Wave 3 alcohol use from variables measured in Wave 1……...……………………………………………..………………95 Table 6.1. Descriptive statistics for Wave 1 variables and percentage reporting cannabis use in Wave 1 and 3 of each latent class group……………………..……...116 Table 6.2. Logistic regression predicting Wave 3 cannabis use from variables measured in Wave 1…………………………………………………………………...118 Table 7.1. Wave 1 country of birth and home language associations with parenting and alcohol and cannabis use variables……………………………..…………..140 Table 7.2. Multinominal regression predicting Wave 3 alcohol and cannabis use from variables measured in Wave 1…………………………...…………………141
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