The original Personal Growth Initiative Scale (PGIS; Robitschek, 1998) was unidimensional, despite theory identifying multiple components (e.g., cognition and behavior) of personal growth initiative (PGI). The present research developed a multidimensional measure of the complex process of PGI, while retaining the brief and psychometrically sound properties of the original scale. Study 1 focused on scale development, including theoretical derivation of items, assessing factor structure, reducing number of items, and refining the scale length using samples of college students. Study 2 consisted of confirmatory factor analysis with 3 independent samples of college students and community members. Lastly, Study 3 assessed test-retest reliability over 1-, 2-, 4-, and 6-week periods and tests of concurrent and discriminant validity using samples of college students. The final measure, the Personal Growth Initiative Scale-II (PGIS-II), includes 4 subscales: Readiness for Change, Planfulness, Using Resources, and Intentional Behavior. These studies provide exploratory and confirmatory evidence for the 4-factor structure, strong internal consistency for the subscales and overall score across samples, acceptable temporal stability at all assessed intervals, and concurrent and discriminant validity of the PGIS-II. Future directions for research and clinical practice are discussed.

Despite the importance of interpersonal public communication about climate change, most citizens rarely discuss the topic. In two studies, we find that inaccurate perceptions of others' opinions (i.e. pluralistic ignorance) contribute to self-silencing among those concerned about climate change. Study 1 illustrates that those who are aware of others' concern about climate change report greater willingness to discuss the issue than those with inaccurate perceptions of others' opinions. Study 2 demonstrates that correcting pluralistic ignorance increases concerned participants' willingness to discuss climate change. In both studies, pluralistic ignorance leads to self-silencing because perceptions that others do not share one's opinion are associated with expecting to be perceived as less competent in a conversation about climate change. In contrast to previous research on confronting prejudice, in the present research expectations about being disliked did not explain self-silencing. We discuss the implications for self-silencing and promoting interpersonal communication about climate change.

Interpersonal discussions about climate change among the public are important for creating positive social change to addressing the issue, yet a majority of the public does not regularly discuss the topic. Previous correlational research connects avoidance of climate change discussions to low efficacy about these discussions. The present research tests whether a knowledge-based intervention which 1) uses evidence-based communication techniques to increase science knowledge and 2) highlights community-level solutions can promote public discussion through improving efficacy beliefs. A lab experiment (N=173) with university students and a field quasi-experiment with two nationally representative samples of visitors to informal science learning centers (e.g., aquariums, N a =1068, N b =907) demonstrates that those that received a knowledge-based intervention (vs. those who do not receive this intervention) report higher efficacy beliefs, which subsequently enhance engagement in climate change discussion. Our results suggest the potential for national-level knowledge-based interventions which improve efficacy beliefs to catalyze public engagement.

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Engagement in proenvironmental behavior can be understood in part by considering how individuals operate as members of social communities and are influenced by these communities. In the present work, we use social network analysis to explore how social network structure predicts proenvironmental behavior. We consider three types of behaviors—(a) private, (b) public nonorganizational, and (c) organizational behaviors—and consider the potential for (i) behavioral diffusion and (ii) two types of opinion leader influence for each of these three behaviors within a religious social community. Results are consistent with patterns indicating diffusion for public nonorganizational and organizational, but not private behaviors. In contrast, being well connected with many opinion leaders to whom one would go for advice (but not simply being friends with these individuals) is associated with greater engagement in all three types of proenvironmental behavior.

We document the gendered nature and valence of stereotypes about each of the Six Americas climate change opinion groups that represent a continuum of climate change opinions from Dismissive to Alarmed. Results primarily supported predictions. First, the more groups were associated with strong concern about climate change, the more feminine they were perceived to be. Second, groups with strong concern or strong lack of concern were seen the most negatively. However, contrary to expectations, greater concern was also associated with more positive masculine traits. Combining effects, most perceived the Dismissive to have negative masculine traits and not to have positive feminine traits, those with intermediate opinions (especially, those who were Cautious and Concerned) most favorably, and the Alarmed to have both positive masculine and negative feminine traits. Ratings suggest that (a) the Dismissive may be seen as being “bad but bold”, (b) the Cautious and Concerned may be seen as liked but not respected, and (c) the Alarmed may be seen as respected but not liked. Thus, ratings indicate the importance of attending to gendered and ambivalent impressions of group. Third, valence of impressions was moderated by perceivers’ personal concern about climate change in a manner consistent with intergroup biases. Findings lay the groundwork for understanding the influence of impressions of opinion groups on, for example, willingness to endorse opinions, associate with opinion groups, and support or oppose climate change action.