Author ContributionsCGS and FKB contributed equally to the article; they conceptualized and designed the study and planned the pre-registration. CGS processed the data and conducted the analyses. FKB with LMG and NCO conducted the literature review and drafted the manuscript, with significant input from CGS, NS, MSW, CHJL, PM, JB, DO, TLM, CAH, IMD, and RVJ. NS and LMG prepared the figures.

This study examines attrition rates over the first four years of the New Zealand Attitudes and Values Study, a longitudinal national panel sample of New Zealand adults. We report the base rate and covariates for the following four distinct classes of respondents: explicit withdrawals, lost respondents, intermittent respondents and constant respondents. A multinomial logistic regression examined an extensive range of demographic and socio-psychological covariates (among them the Big-Six personality traits) associated with membership in these classes (N = 5,814). Results indicated that men, Māori and Asian peoples were less likely to be constant respondents. Conscientiousness and Honesty-Humility were also positively associated with membership in the constant respondent class. Notably, the effect sizes for the socio-psychological covariates of panel attrition tended to match or exceed those of standard demographic covariates. This investigation broadens the focus of research on panel attrition beyond demographics by including a comprehensive set of socio-psychological covariates. Our findings show that core psychological covariates convey important information about panel attrition, and are practically important to the management of longitudinal panel samples like the New Zealand Attitudes and Values Study.

The contagiousness and deadliness of COVID-19 have necessitated drastic social management to halt transmission. The immediate effects of a nationwide lockdown were investigated by comparing matched samples of New Zealanders assessed before (Npre-lockdown = 1,003) and during the first 18 days of lockdown (Nlockdown = 1,003). Two categories of outcomes were examined: (1) institutional trust and attitudes towards the nation and government, and (2) health and wellbeing. Applying propensity score matching to approximate the conditions of a randomized controlled experiment, the study found that people in the pandemic/lockdown group reported higher trust in science, politicians, and police, higher levels of patriotism, and higher rates of mental distress compared to people in the pre-lockdown pre-pandemic group. Results were confirmed in within-subjects analyses. The study highlights social connectedness, resilience, and vulnerability in the face of adversity, and has applied implications for how countries face this global challenge.

Growing media consumption and emerging forms of social media such as Facebook allow for unprecedented appearance-based social comparison with peers, family, and the wider media. We hypothesise that, for adult men and women, body dissatisfaction is related to peer-based media just as it is to traditional media forms. We expect that middle-aged women in particular are a vulnerable population, due to increasing pressure to conform to youthful beauty standards. In a national sample of New Zealand adults collected in 2012 (N=11,017), we test the cross-sectional links between being a Facebook user and body satisfaction for men and women across age cohorts. Using a Bayesian regression model testing curvilinear effects of age, we show that having and using a Facebook profile is associated with poorer body satisfaction for both men and women, and across all ages. For women who use Facebook, a U-shaped curvilinear relationship was found between age and body satisfaction; thus the gap between nonusers and users in body satisfaction was exacerbated among middle-aged women. A possible cohort effect also indicated that young women tend to be lower in body satisfaction overall. These findings add to the extant literature by suggesting that new media exposure may be associated with lower body satisfaction for some populations more than others, and emphasise the importance of examining body satisfaction in older populations.

Ideologies that legitimize status hierarchies are associated with increased well-being. However, which ideologies have 'palliative effects', why they have these effects, and whether these effects extend to low-status groups remain unresolved issues. This study aimed to address these issues by testing the effects of the ideology of Symbolic Prejudice on well-being among low- and high-status ethnic groups (4,519 Europeans and 1,091 Māori) nested within 1,437 regions in New Zealand. Results showed that Symbolic Prejudice predicted increased well-being for both groups, but that this relationship was stronger for those living in highly unequal neighbourhoods. This suggests that it is precisely those who have the strongest need to justify inequality that accrue the most psychological benefit from subscribing to legitimizing ideologies.