Journal Articles
Permanent URI for this collectionhttps://mro.massey.ac.nz/handle/10179/7915
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Item Extremism at the center: Uncovering political diversity among midpoint responders on the left–right self-placement item(Wiley Periodicals LLC on behalf of International Society of Political Psychology, 2025-10-22) Clarke EJR; Eckerle F; Kerr JR; Hill SR; Ling M; Marques MD; Williams MNThe midpoint of the left-right self-placement item is hiding important political diversity, and may be conflating moderate responders with populists and other political sub-groups. Survey researchers should consider this problem when examining relationships between political orientation and political attitudes. We suggest testing for non-linearity in these relationships, and measuring anti-establishment and populist beliefs separately. Researchers interested in building theories explaining the psychological underpinnings of ideological extremism should also consider the possibility that a qualitatively different type of ideological extremist self-places on the midpoint.Item Does Truth Pay? Investigating the Effectiveness of the Bayesian Truth Serum With an Interim Payment: A Registered Report(SAGE Publications on behalf of the Association for Psychological Science, 2025-07-07) Neville CM; Williams MN; Sbarra DASelf-report data are vital in psychological research, but biases such as careless responding and socially desirable responding can compromise their validity. Although various methods are employed to mitigate these biases, they have limitations. The Bayesian truth serum (BTS) offers a survey scoring method to incentivize truthfulness by leveraging correlations between personal and collective opinions and rewarding “surprisingly common” responses. In this study, we evaluated the effectiveness of the BTS in mitigating socially desirable responding to sensitive questions and tested whether an interim payment could enhance its efficacy by increasing trust. In a between-subjects experimental survey, 877 participants were randomly assigned to one of three conditions: BTS, BTS with interim payment, and regular incentive (RI). Contrary to the hypotheses, participants in the BTS conditions displayed lower agreement with socially undesirable statements compared with the RI condition. The interim payment did not significantly enhance the BTS’s effectiveness. Instead, response patterns diverged from the mechanism’s intended effects, raising concerns about its robustness. As the second registered report to challenge its efficacy, this study’s results cast serious doubt on the BTS as a reliable tool for mitigating socially desirable responding and improving the validity of self-report data in psychological research.Item Acceptance and commitment therapy for mild traumatic brain injury (ACTion-mTBI): a quasiexperimental feasibility study(BMJ Publishing Group Ltd, 2025-02-16) Faulkner J; Prouty D; Devlin L; Appleton D; Roche M; Below K; Moffat J; Snell D; Williams MN; Barker-Collo S; Theadom AOBJECTIVES: This study aimed to determine the feasibility of recruiting, implementing and delivering an acceptance and commitment therapy (ACT) intervention for mild traumatic brain injury (mTBI) (ACTion-mTBI) within a multidisciplinary outpatient mTBI rehabilitation services. The study also aimed to conduct a preliminary investigation of group differences between ACTion-mTBI and an equivalent cognitive behavioural therapy (CBT) intervention on various outcome measures and psychological treatment targets. DESIGN: A two-arm quasiexperimental feasibility study. SETTING: Five mTBI rehabilitation clinics throughout New Zealand. INTERVENTION: Psychologists working in mTBI rehabilitation clinics throughout New Zealand were trained to deliver ACTion-mTBI or CBT. Eligible participants were assigned to either of these interventions based on the psychologist available at the clinic they were referred to. ACTion-mTBI is a five sessions intervention that incorporates all six components of the ACT model. The CBT intervention is an equivalent intervention and incorporating all four components of the CBT model. Both interventions are adapted for an mTBI context. PRIMARY OUTCOME MEASURES: The primary outcomes were related to the feasibility of ACTion-mTBI. This included recruitment, retention and treatment adherence of participants, study procedure and fidelity of treatment delivery. SECONDARY OUTCOME MEASURES: To explore group differences between ACTion-mTBI and CBT on functional disability, postconcussion symptoms, mental health, valued living and psychological flexibility. RESULTS: The intervention proved feasible to implement with community-based mTBI rehabilitation services. Attrition rates were comparable between the two psychological interventions and fidelity to the treatments was high. At post-treatment, when covarying pretreatment scores, ACTion-mTBI had a significantly greater improvement in functional disability than CBT (moderate effect). ACTion-mTBI also had a significantly greater reduction in postconcussion symptoms, anxiety and stress. Promisingly, significant improvements in psychological flexibility was also found post-treatment. There were no group differences on depressive symptoms and valued living. CONCLUSION: We conclude that a full clinical trial of ACTion-mTBI for individuals with mTBI is feasible and warranted. TRIAL REGISTRATION NUMBER: ACTRN1262100059482.Item Network analysis applied to post-concussion symptoms in two mild traumatic brain injury samples.(Frontiers Media S.A., 2023-07-20) Faulkner JW; Theadom A; Snell DL; Williams MN; Andelic NOBJECTIVE: A latent disease explanation cannot exclusively explain post-concussion symptoms after mild traumatic brain injury (mTBI). Network analysis offers an alternative form of explanation for relationships between symptoms. The study aimed to apply network analysis to post-concussion symptoms in two different mTBI cohorts; an acute treatment-seeking sample and a sample 10 years post-mTBI. METHOD: The treatment-seeking sample (n = 258) were on average 6 weeks post-injury; the 10 year post mTBI sample (n = 193) was derived from a population-based incidence and outcomes study (BIONIC). Network analysis was completed on post-concussion symptoms measured using the Rivermead Post-Concussion Questionnaire. RESULTS: In the treatment-seeking sample, frustration, blurred vision, and concentration difficulties were central to the network. These symptoms remained central in the 10 year post mTBI sample. A Network Comparison Test revealed evidence of a difference in network structure across the two samples (p = 0.045). However, the only symptoms that showed significant differences in strength centrality across samples were irritability and restlessness. CONCLUSION: The current findings suggest that frustration, blurred vision and concentration difficulties may have an influential role in the experience and maintenance of post-concussion symptoms. The impact of these symptoms may remain stable over time. Targeting and prioritising the management of these symptoms may be beneficial for mTBI rehabilitation.Item People do change their beliefs about conspiracy theories-but not often.(Springer Nature Limited, 2024-02-15) Williams MN; Ling M; Kerr JR; Hill SR; Marques MD; Mawson H; Clarke EJRRecent research has produced a significant body of knowledge about the antecedents and consequences of individual differences in belief in conspiracy theories. What is less clear, however, is the extent to which individuals' beliefs in conspiracy theories vary over time (i.e., within-person variation). In this descriptive and exploratory study, we therefore aimed to describe within-person variability in belief in conspiracy theories. We collected data from 498 Australians and New Zealanders using an online longitudinal survey, with data collected at monthly intervals over 6 months (March to September 2021). Our measure of conspiracy theories included items describing ten conspiracy theories with responses on a 5-point Likert scale. While there was substantial between-person variance, there was much less within-person variance (intraclass r = 0.91). This suggests that beliefs in conspiracy theories were highly stable in our sample. This stability implies that longitudinal studies testing hypotheses about the causes and consequences of belief in conspiracy theories may require large samples of participants and time points to achieve adequate power. It also implies that explanations of belief in conspiracy theories need to accommodate the observation that beliefs in such theories vary much more between people than within people.Item Mindfulness as practice: A network analysis of FMI data(John Wiley and Sons Inc on behalf of the British Association for Counselling and Psychotherapy, 2021-12-01) Smith JH; Kempton HM; Williams MN; van Ommen CMindfulness research implicitly conceives of mindfulness as an identifiable real ‘thing’ that exists beyond what is directly observed. Recently, a new methodology has been developed which allows mindfulness to be modelled as a complex system or network at the level of self-report. In these models, items become a network's nodes, and the statistical relations between them, edges. Interpreted causally, nodes are thought to increasingly influence each other via their edges, such that they become increasingly correlated. This study hypothesises that at a cross-sectional level, this may result in differences in overall network connectivity (density) between practitioners and non-practitioners. Mindfulness networks were estimated for practitioners and non-practitioners using the Friedberg Mindfulness Inventory (FMI). A total of 371 regular mindfulness practitioners and 283 non-practitioners (including 59 irregular practitioners) were recruited online from Amazon Mechanical Turk. Comparisons of practitioners’ and non-practitioners’ networks indicated that network density did not significantly differ, whereas evidence was found in support of a significant difference in network structure. An exploratory analysis revealed substantive group differences in how items (practices) were connected. In particular, the practice of Acceptance appeared more central to the practitioners’ network relative to the non-practitioners' network, indicating Acceptance may be particularly useful for engagement in mindfulness practices. The study supports investigating mindfulness as a complex network at the level of self-report, with implications for how the development of mindfulness is conceptualised. The lack of difference in network density indicates that research is needed to examine network dynamics in the context of regular mindfulness practice.Item Perceptions of Powerlessness Are Negatively Associated with Taking Action on Climate Change: A Preregistered Replication(Mary Ann Liebert, Inc, 2/12/2020) Williams MN; Jaftha BADespite segments of skepticism, the majority of the general public in most countries believe that climate change is occurring and caused by human activities. Behavior changes by individuals can reduce greenhouse gas emissions to at least some extent, but a range of psychological and economic barriers can prevent individuals from taking action. A survey of New Zealanders by Aitken, Chapman, and McClure (2011) reported that belief in human influence on climate change and the risks of climate change were positively correlated with taking action on climate change. Conversely, perceptions of powerlessness and the commons dilemma were negatively correlated with taking action on climate change. Feeling powerless was associated with placing less importance on climate change as an influence on actions. Although the study by Aitken et al. has been influential, it was exploratory in nature, had a moderate sample size, was not preregistered, and has not previously been replicated. In this study, we report a preregistered replication with a sample of 352 Australians testing four hypotheses based on Aitken et al.'s findings (as summarized above). All four hypotheses were supported, reproducing Aitken et al.'s key findingsItem In response to "temperature and violent crime in dallas, Texas: relationships and implications of climate change".(2013-09) Williams MN; Hill SR; Spicer JItem Academic dishonesty, self-control, and general criminality: A prospective and retrospective study of academic dishonesty in a New Zealand university(Routledge Taylor & Francis Group, 2012) Williams MM; Williams MNAcademic dishonesty is an insidious problem that besets most tertiary institutions, where considerable resources are expended to prevent and manage students’ dishonest actions within academia. Using a mixed retrospective and prospective design this research investigated Gottfredson and Hirschi’s self-control theory as a possible explanation for academic dishonesty in 264 university students. The relationship between academic dishonesty and general criminality was also examined. A significant but small to moderate relationship between academic dishonesty and general criminality was present, including correlations with general dishonesty, violent crime and drug offending subcategories. These findings suggested that a general criminological theory may be of use in explaining academic dishonesty, but the overall ability of self-control variables to explain academic dishonesty was not strong. Controlled logistic regressions indicated that a significant positive association with academic dishonesty was only present for one of 6 self-control subscales (self-centeredness), and even this association was only present in the prospective study component. A strong relationship between past and future academic dishonesty was present. Implications of the study for institutions are discussed.Item
