Michael D. Buhrmester

Amazon's Mechanical Turk: A New Source of Inexpensive, Yet High-Quality, Data?

Amazon’s Mechanical Turk (MTurk) is a relatively new website that contains the major elements required to conduct research: an integrated participant compensation system; a large participant pool; and a streamlined process of study design, participant recruitment, and data collection. In this article, we describe and evaluate the potential contributions of MTurk to psychology and other social sciences. Findings indicate that (a) MTurk participants are slightly more demographically diverse than are standard Internet samples and are significantly more diverse than typical American college samples; (b) participation is affected by compensation rate and task length, but participants can still be recruited rapidly and inexpensively; (c) realistic compensation rates do not affect data quality; and (d) the data obtained are at least as reliable as those obtained via traditional methods. Overall, MTurk can be used to obtain high-quality data inexpensively and rapidly.

Implicit Self-Esteem: Nature, Measurement, and a New Way Forward

Gaining insight into the nature and consequences of peoples global self-evaluations (i.e., their self-esteem) has been fraught with difficulty. Nearly 2 decades ago, researchers suggested that such difficulties might be addressed by the development of a new class of measures designed to uncover implicit self-esteem. In this article, we evaluate the construct validity of the 2 most common measures of implicit self-esteem, the Implicit Association Test (IAT) and Name-Letter Test (NLT). Our review indicates that the research literature has not provided strong or consistent support for the validity of either measure. We conclude that both tests are impoverished measures of self-esteem that are better understood as measures of either generalized implicit affect (IAT) or implicit egotism (NLT). However, we suggest that there surely are aspects of self-esteem that people are unwilling or unable to report and suggest a general approach that may allow researchers to tap these unspoken aspects of self-esteem.

On the Nature of Identity Fusion: Insights Into the Construct and a New Measure

Previous research has documented the consequences of feeling fused with a group; here we examine the nature of identity fusion. Specifically, we sought to determine what fusion is and the mediating mechanisms that lead fused individuals to make extraordinary sacrifices for their group. Guided by the assumption that fusion emphasizes the extent to which people develop relational ties to the group, we developed a measure designed to capture feelings of connectedness and reciprocal strength with the group. In 10 studies, the newly developed scale displayed predicted relationships with related measures, including an earlier (pictorial) measure of fusion and a measure of group identification. Also as expected, fusion scores were independent of several measures of personality and identity. Moreover, the scale predicted endorsement of extreme progroup behaviors with greater fidelity than did an earlier pictorial measure of identity fusion, which was, in turn, superior to a measure of group identification. Earlier evidence that the personal and social selves of fused persons are functionally equivalent was replicated, and it was shown that feelings of agency and invulnerability mediated the effects of fusion on extreme behavior. Finally, Spanish- and English-language versions of the verbal fusion scale showed similar factor structure as well as evidence of convergent, discriminant, and predictive validity in samples of Spaniards and Americans, as well as immigrants from 22 different countries. This work advances a new perspective on the interplay between social and personal identity.

Brothers in arms: Libyan revolutionaries bond like family

Significance The human propensity to sacrifice one’s life for genetic strangers has puzzled scientists since Darwin. Here, we sought answers to this puzzle by embedding ourselves within groups of individuals prepared to die for one another—Libyan revolutionary battalion members who fought against Gaddafi’s regime in 2011. We found striking evidence of extraordinarily tight, familial-like bonds among those who put themselves directly in harm’s way (i.e., frontline combatants). In fact, for nearly half of combatants, their bonds to each other were stronger than bonds to their own families. Moreover, these kin-like bonds to one another predispose them to extreme self-sacrifice. What motivates ordinary civilians to sacrifice their lives for revolutionary causes? We surveyed 179 Libyan revolutionaries during the 2011 conflict in Libya. These civilians-turned-fighters rejected Gaddafi’s jamahiriyya (state of the masses) and formed highly cohesive fighting units typical of intense conflicts. Fighters reported high levels of “identity fusion”—visceral, family-like bonds between fighters and their battalions. Fusion of revolutionaries with their local battalions and their own families were extremely high, especially relative to Libyans who favored the revolution but did not join battalions. Additionally, frontline combatants were as strongly bonded to their battalion as they were to their own families, but battalion members who provided logistical support were more fused with their families than battalions. Together, these findings help illuminate the social bonds that seem to motivate combatants to risk their lives for the group during wartime.

When Terror Hits Home: Identity Fused Americans Who Saw Boston Bombing Victims as “Family” Provided Aid

When tragedy strikes a group, only some group members characteristically rush to the aid of the victims. What motivates the altruism of these exceptional individuals? Here, we provide one set of answers based on data collected before and shortly after the 15 April 2013, Boston Marathon bombings. The results of three studies indicated that Americans who were strongly “fused” with their country were especially inclined to provide various forms of support to the bombing victims. Moreover, the degree to which participants reported perceiving fellow Americans as psychological kin statistically mediated links between fusion and pro-group outcomes. Together, these findings shed new light on relationships between personal and group identity, cognitive representations of group members, and personally costly, pro-group actions.

Religious actions speak louder than words: exposure to credibility-enhancing displays predicts theism

ABSTRACT One of the central aims of the cognitive science of religion (CSR) is to explain why supernatural agent beliefs are so widespread. A related but distinct aim is to explain why some individuals hold supernatural agent beliefs but others do not. Here, we aim to provide an initial test of the power of exposure to what Henrich calls “credibility-enhancing displays” (or “CREDs”) in determining whether or not an individual holds explicit supernatural agent beliefs. We present evidence from two studies of Americans suggesting that exposure to CREDs, as measured by a scale we developed and validated, predicts current theism vs. non-theism, certainty of Gods existence/non-existence, and religiosity while controlling for overall religious socialization. These results are among the first to empirically support the theorized significance of CREDs for the acquisition of supernatural agent beliefs.

The Evolution of Extreme Cooperation Via Shared Dysphoric Experiences

Willingness to lay down one’s life for a group of non-kin, well documented historically and ethnographically, represents an evolutionary puzzle. Building on research in social psychology, we develop a mathematical model showing how conditioning cooperation on previous shared experience can allow individually costly pro-group behavior to evolve. The model generates a series of predictions that we then test empirically in a range of special sample populations (including military veterans, college fraternity/sorority members, football fans, martial arts practitioners, and twins). Our empirical results show that sharing painful experiences produces “identity fusion” – a visceral sense of oneness – which in turn can motivate self-sacrifice, including willingness to fight and die for the group. Practically, our account of how shared dysphoric experiences produce identity fusion helps us better understand such pressing social issues as suicide terrorism, holy wars, sectarian violence, gang-related violence, and other forms of intergroup conflict.

The Dynamic Identity Fusion Index

We introduce a computer-based measure of “identity fusion,” a form of group alignment characterized by a visceral feeling of oneness with a group. Past measures of identity fusion (a single pictorial item and a 7-item verbal scale) have demonstrated a unique capacity to predict willingness to engage in extreme pro-group behaviors (e.g., fighting and dying for one’s group). The Dynamic Identity Fusion Index (DIFI) combines the simplicity of the single pictorial item with the higher fidelity afforded by a continuous scale. The DIFI runs on a script written in JavaScript and works on both traditional computers and modern touch-pad devices. It allows for simultaneous assessment of self-group distance and overlap, two conceptually distinct components of group alignment. Study 1 assessed the criterion validity of the two components of the DIFI and discovered that the overlap metric was a better indicator of identity fusion than the distance metric. Four more studies demonstrated DIFI’s temporal stability (Study 2), convergent and discriminant validity (Study 3), and predictive validity, specifically endorsement of pro-group behaviors (Study 4). We discuss implications of the DIFI for future research on identity fusion and recommend when it should be used.

Explaining Lifelong Loyalty: The Role of Identity Fusion and Self-Shaping Group Events.

Pledging lifelong loyalty to an ingroup can have far-reaching behavioural effects, ranging from ordinary acts of ingroup kindness to extraordinary acts of self-sacrifice. What motivates this important form of group commitment? Here, we propose one especially potent answer to this question–the experience of a visceral sense of oneness with a group (i.e., identity fusion). In a sample of British football fans, a population in which high levels of lifelong loyalty are thought to be common, we first examined the hypothesised relationship between fusion and perceptions of lifelong loyalty to one’s club. We further explored the hypothesis that fusion and lifelong loyalty are not merely a reflection of past time investment in a group, but also reflect a deeper, memory-based process of feeling personally shaped by key group events, both euphoric and dysphoric. We found broad support for these hypotheses. Results suggest that feeling personally self-shaped by club events (e.g., crucial wins and losses), rather than time invested in the club, leads to greater identity fusion to one’s club. In turn, fusion engenders a sense of lifelong club loyalty. We discuss our findings in relation to the growing literature on the experiential origins of intense social cohesion.

My Group's Fate Is My Fate: Identity-Fused Americans and Spaniards Link Personal Life Quality to Outcome of 2008 Elections

People differ in their reactions to the outcomes of their group. Whereas some may revel in victory and mourn in defeat, others may internalize victory but distance themselves from defeat. Here, we sought to relate these divergent reactions to two forms of alignment with groups–identity fusion and group identification. Investigations of the 2008 elections in the United States and Spain revealed that people who were “fused” with their political party internalized both victory and defeat, but highly identified persons internalized only victory. We discuss how these findings bear on the conceptual distinctions between identity fusion and group identification.