Impressions of World of Warcraft players’ personalities based on their usernames: Interobserver consensus but no accuracy

Millions of people interact in the context of massively-multi-player-online-role-play-games (MMORPGs). Here we address whether MMORPG usernames convey accurate information about users’ personalities. Impressions based on email addresses show some accuracy but MMORPG’s are different because they provide little accountability, with little expectation that users will ever meet in person. We assessed consensus and accuracy in impressions based on 1357 (153 females) World of Warcraft users. Ratings of the usernames in terms of the Big Five dimensions yielded strong consensus (mean ICC = .46) but low accuracy (mean r = .01). Lens-model analysis suggest that features of the usernames have little validity, but observers used them anyway. Discussion focuses on why results might differ from those based on email addresses.     

Contingencies of self-worth: Progress and prospects

Over a century ago, William James (1890) proposed that the impact of success and failure on self-esteem depends on the domains in which self-esteem is invested. In this chapter, we review a relatively new programme of research that aims to (a) develop and validate a measure of this construct, (b) develop the implications of James's idea for psychological vulnerability and self-regulation, and (c) examine the consequences of investing self-esteem in particular domains for goal pursuit, and the costs and benefits of goal pursuit that is driven by contingencies of self-worth.     

Social learning in juvenile lemon sharks, Negaprion brevirostris

Social learning is taxonomically widespread and can provide distinct behavioural advantages, such as in finding food or avoiding predators more efficiently. Although extensively studied in bony fishes, no such empirical evidence exists for cartilaginous fishes. Our aim in this study was to experimentally investigate the social learning capabilities of juvenile lemon sharks, Negaprion brevirostris. We designed a novel food task, where sharks were required to enter a start zone and subsequently make physical contact with a target in order to receive a food reward. Naive sharks were then able to interact with and observe (a) pre-trained sharks, that is, ‘demonstrators’, or (b) sharks with no previous experience, that is, ‘sham demonstrators’. On completion, observer sharks were then isolated and tested individually in a similar task. During the exposure phase observers paired with ‘demonstrator’ sharks performed a greater number of task-related behaviours and made significantly more transitions from the start zone to the target, than observers paired with ‘sham demonstrators’. When tested in isolation, observers previously paired with ‘demonstrator’ sharks completed a greater number of trials and made contact with the target significantly more often than observers previously paired with ‘sham demonstrators’. Such experience also tended to result in faster overall task performance. These results indicate that juvenile lemon sharks, like numerous other animals, are capable of using socially derived information to learn about novel features in their environment. The results likely have important implications for behavioural processes, ecotourism and fisheries.     

Effects of display complexity on location and feature inhibition

Inhibition of return refers to the lengthening of reaction times (RTs) to a target when a preceding stimulus has occupied the same location in space. Recently, we observed a robust inhibitory effect for color and shape in moderately complex displays: It is more difficult to detect a target with a particular nonspatial attribute if a stimulus with the same attribute was recently the focus of attention. Such nonspatial inhibitory effects have not generally been found in simpler displays. In the present study, we test how location-based and nonspatial inhibitory effects vary as a function of display complexity (eight, six, four, and two locations). The results demonstrated that (1) location-based inhibition effects were much stronger in more complex displays, whereas the nonspatial inhibition was only slightly stronger in more complex displays; (2) nonspatial inhibitory effects emerged at longer stimulus onset asynchronies than did location-based effects; and (3) nonspatial inhibition appeared only when cues and targets occurred in the same locations, confirming that pure feature repetition does not produce a cost. Taken together, the results are consistent with perceptual processes based on object files that are organized by spatial location. Using somewhat more complex displays than are most commonly employed provides a more sensitive method for observing the role of inhibitory processes in facilitating visual search. In addition, using a relatively wide set of cue–target timing relationships is necessary in order to clearly see how inhibitory effects operate.     

Necessity and Triviality

In this paper I argue that there are some sentences whose truth makes no demands on the world, being trivially true in that their truth-conditions are trivially met. I argue that this does not amount to their truth-conditions being met necessarily: we need a non-modal understanding of the notion of the demands the truth of a sentence makes, lest we be blinded to certain conceptual possibilities. I defend the claim that the truths of pure mathematics and set theory are trivially true, and hence accepting their truth brings no ontological commitment; I further defend the claim that the truths of applied mathematics and set theory do not demand the existence of numbers or sets. While the notion of a demand must not be reduced to anything modal, I nonetheless argue that sentences that are trivially true must also be necessary, lest we violate a very weak version of the principle that truth depends on the world. I further argue that all necessary truths are trivially true, lest we admit unexplained necessities. I end by showing one important consequence of this: I argue that if there are truthmakers for intrinsic predications, they must be states of affairs rather than tropes.     

Treatment of Male Homosexuals in Groups

Abstract

The healing power of psychodynamically oriented therapy and training groups rests, to a large degree, upon the quality of the here and now interactions. For the work to be effective, the basic principles of analytic group work need to be followed, including the observance of no extra–group contact. Simply said, nothing leaves the room. This principle has both ethical and clinical implications. It is my premise that while some forms of outside contact between members are relatively benign, other types are not. Outside contact that is built into the fabric and context of the group may pose a risk, as may be the case where dual relationships exist between members. The impact of dual relationships between group members in the particular instance of analytic training institutes is the focus of this article. What happens to the transference in this context when members reveal too much of their personal lives to each other through dual relationships is explored. It is suggested that extra–group contact can disrupt the balance between reality and transference distortion in group interactions in at least three ways: (a) “The Emperor’s New Clothes” effect, (b) looping, and (c) gaslighting. Vignettes are presented to illustrate these phenomena and suggestions for reform are offered.     

Living with an other-race roommate shapes Whites' behavior in subsequent diverse settings

In a multi-phase research design over two academic semesters, White college students assigned to either a same-race or other-race roommate were tracked across two survey phases and a third phase involving an interracial interaction with a Black stranger. After four months, Whites who lived with an other-race roommate came to have more diverse friends and believe that diversity was more important than did Whites with a White roommate. After six months, self-reports, partner ratings, and nonverbal behavior indicated that Whites with an other-race roommate were less anxious, more pleasant, and more physically engaged during a novel interracial interaction. These results demonstrate that residential contact with other-race individuals not only affects race-related attitudes, but can also reduce interracial anxiety and positively influence behavior in subsequent diverse settings.     

The Functions of the Visual Cortex in Optic Nystagmus at Different Velocities of Movement in the Visual Field

(Sherif, M., and Sherif, C. W. Groups in Harmony and Tension. New York: Harper, 1953. Pp. 316.), Philander Smith College, Little Rock, Arkansas Reviewed by Martin M. Grossack.