Wisdom of the social versus non-social crowd in face identification

Face identification is more accurate when people collaborate in social dyads than when they work alone (Dowsett & Burton, 2015, Br. J. Psychol., 106, 433). Identification accuracy is also increased when the responses of two people are averaged for each item to create a ‘non-social’ dyad (White, Burton, Kemp, & Jenkins, 2013, Appl. Cogn. Psychol., 27, 769; White et al., 2015, Proc. R. Soc. B Biol. Sci., 282, 20151292). Does social collaboration add to the benefits of response averaging for face identification? We compared individuals, social dyads, and non-social dyads on an unfamiliar face identity-matching test. We also simulated non-social collaborations for larger groups of people. Individuals and social dyads judged whether face image pairs depicted the same- or different identities, responding on a 5-point certainty scale. Non-social dyads were constructed by averaging the responses of paired individuals. Both social and non-social dyads were more accurate than individuals. There was no advantage for social over non-social dyads. For larger non-social groups, performance peaked at near perfection with a crowd size of eight participants. We tested three computational models of social collaboration and found that social dyad performance was predicted by the decision of the more accurate partner. We conclude that social interaction does not bolster accuracy for unfamiliar face identity matching in dyads beyond what can be achieved by averaging judgements.     

Direct and interactive effects of parent,friend and schoolmate drinking on alcohol use trajectories

Objective: This study considered the unique and interactive roles of social norms from parents, friends and schools in predicting developmental trajectories of adolescent drinking and intoxication.

Design and outcome measures: Using data from the National Longitudinal Study of Adolescent Health, which followed adolescents (N = 18,921) for 13 years, we used discrete mixture modelling to identify unique developmental trajectories of drinking and of intoxication. Next, multilevel multinomial regression models examined the role of alcohol-related social norms from parents, friends and schoolmates in the prediction of youths’ trajectory group membership.

Results: Results demonstrated that social norms from parents, friends and schoolmates that were favourable towards alcohol use uniquely predicted drinking and intoxication trajectory group membership. Interactions between social norms revealed that schoolmate drinking played an important moderating role, frequently augmenting social norms from parents and friends. The current findings suggest that social norms from multiple sources (parents, friends and schools) work both independently and interactively to predict longitudinal trajectories of adolescent alcohol use.

Conclusions: Results highlight the need to identify and understand social messages from multiple developmental contexts in efforts to reduce adolescent alcohol consumption and alcohol-related risk-taking.     

The link between mental rotation ability and basic numerical representations

Mental rotation and number representation have both been studied widely, but although mental rotation has been linked to higher-level mathematical skills, to date it has not been shown whether mental rotation ability is linked to the most basic mental representation and processing of numbers. To investigate the possible connection between mental rotation abilities and numerical representation, 43 participants completed four tasks: 1) a standard pen-and-paper mental rotation task; 2) a multi-digit number magnitude comparison task assessing the compatibility effect, which indicates separate processing of decade and unit digits; 3) a number-line mapping task, which measures precision of number magnitude representation; and 4) a random number generation task, which yields measures both of executive control and of spatial number representations. Results show that mental rotation ability correlated significantly with both size of the compatibility effect and with number mapping accuracy, but not with any measures from the random number generation task. Together, these results suggest that higher mental rotation abilities are linked to more developed number representation, and also provide further evidence for the connection between spatial and numerical abilities.     

False pretense and deviant exploitation: Fortunetelling as a con

This paper presents a dramaturgical analysis of the backstage manipulations carried out by practitioners of the deviant occupation known as fortunetelling. It is generally believed that con games require a dishonest victim, although many practitioners manipulate their impressions with clients who are seeking a service rather than a profit. The group of fortunetellers included in this study are nonbelievers and hence fundamentally misrepresent themselves to their clients. Drawing upon depth interviews with 21 non‐Gypsy fortunetellers, including two key informants, six backstage routines are analyzed. Each routine in the fortuneteller's performance presents the client with a frontstage definition of the activity designed to sell more and more “psychic services.” The implications of the dramaturgical analysis of con games are discussed.     

Understanding the experimenter's intention improves 16-month-olds’ observational learning of the use of a novel tool

Our aim was to investigate why 16-month-old infants fail to master a novel tool-use action via observational learning. We hypothesized that 16-month-olds’ difficulties may be due to not understanding the goal of the observed action. To test this hypothesis, we investigated whether showing infants an explicit demonstration of the goal of the action before demonstrating the action would improve observational learning compared with a classic demonstration of the target action. We examined 16-month-old infants who observed a tool-use action consisting of grasping a rake-like tool to retrieve an out-of-reach toy, under five conditions. Only when infants were shown the goal of the action before demonstration did they show some success.     

Sales Productivity of Insurance Agents During the First Six Months of Employment: Differences Between Older and Younger New Hires

This study investigated the relationship of information-seeking from managers and coworkers, number of prospecting methods used, and number of joint sales calls the new hire went on with managers and coworkers to sales productivity during the first six months of employment. This study also investigated whether age was directly related to sales productivity, indirectly related through its influence on the other independent variables, or moderated the relationship between the independent variables and sales productivity. Results showed that age and going on joint sales calls with managers and coworkers were positively related to sales productivity. Age also served as a moderator. Older new hires who used a variety of prospecting techniques, and younger new hires who asked their peers for information about job and organizational procedures were better performers. The implications of these results for organizations are discussed.     

The Role of Recruit Division Commanders in Graduation From U.S. Navy Recruit Training

We investigated the importance of the role of drill instructors (RDCs) on training and retention of new sailors (N = 34,000). Based on social support and group cohesion literatures, we hypothesized that social support from RDCs would influence completion rates of entry-level Navy training and retention intention of new sailors. We found that perceptions of social support from RDCs had a significant positive relationship with eventual graduation from basic training; encouragement to remain in the Navy was particularly strongly related to graduation when the source of the encouragement was RDCs. Further, those who attrited from training were especially likely to perceive RDCs as encouraging them to leave the Navy. We discuss the implications of our findings in terms of theory, research and practice.     

Testing Case Formulation Hypotheses in Psychotherapy: Two Case Examples

We describe two cases that illustrate and demonstrate the effectiveness of a case formulation–driven approach to psychotherapy in which the therapist, in collaboration with the patient, develops a hypothesis (formulation) about the psychological mechanisms that cause and maintain the patient’s difficulties, uses the formulation to guide intervention, and collects data to test the formulation and evaluate the effectiveness of the intervention plan. As shown by the cases reported here, a key strength of this collaborative empirical process is that it enables the patient and therapist to quickly determine when a treatment is failing and take action to rescue it.