Yes, we can (but for different reasons): Collective narcissism is linked to different values but similar pro-ingroup collective action tendencies among disadvantaged and advantaged ethnic groups.

Collective narcissism, a belief that one's group is exceptional and entitled to special treatment but underappreciated by others, is related to important social and political outcomes but has been predominantly studied in advantaged groups. The present research compares the motivational correlates (through values) of collective narcissism in ethnic groups of different status (advantaged and disadvantaged) and explores its associations with attitudes towards, and intention to engage in collective action. Three studies examined these processes in different national and intergroup contexts (total N = 16,275). Overall, ethnic collective narcissism was linked to self-protective values (power, and less consistently, conservation) in advantaged groups but to universalism in disadvantaged groups. Moreover, in both advantaged and disadvantaged groups, ethnic collective narcissism was related to more positive attitudes towards, and intentions of pro-ingroup actions but not to attitudes towards (other) disadvantaged groups (i.e., intergroup solidarity). These studies suggest that collective narcissism may be associated with different motivations, yet linked to similar intergroup attitudes among advantaged and disadvantaged groups.

Disentangling the within- and between-person effects of personality on income for men and women.

Understanding the relationship between personality and income is a topic of interest across multiple disciplines. Correlations between people's personalities and their incomes may arise because differences in stable personalities relate to income differences (between-person effects) or because changes in personality or income are later reflected in the other variable (within-person effects). The current research uses random-intercept cross-lagged panel models to disentangle the two sorts of effects to better understand the relationship between the six factors of personality and income. Using data from 6824 working-age adults in New Zealand across 4 years, we found between-person effects showing higher incomes were obtained by both men and women who were more extraverted, agreeable and open, and less neurotic. Within-person effects showed that earning a higher income was associated with higher neuroticism and lower extraversion over time, while higher extraversion was associated with a lower income over time.