Stagewise multidimensional visual discrimination by pigeons

We trained six pigeons in a stagewise Multiple Necessary Cues (MNC) go/no‐go task to document the dynamics of discrimination learning involving increasingly complex visual stimuli. The compound stimuli were composed from four dimensions, each of which could assume either of two extreme values or their intermediate value: Shape, Size, Line Orientation, and Brightness. Starting with a stimulus composed entirely from intermediate values, we replaced those values with each of the two extreme dimensional values in four successive stages, thereby increasing the stimulus set from 2 in Stage 1 to 16 in Stage 4. In each stage, only one combination of values signaled food (S⁺), whereas the remaining combinations did not (S^?s). We calculated the rate of pecking during the first 15 s of each stimulus presentation and, in any given stage, training continued until the rate of responding to all of the S^?s was less than 20% of the rate of responding to the S⁺. All pigeons successfully acquired the final discrimination, suggesting that they attended to all of the dimensions relevant for the discrimination. We also replicated the key results of prior MNC studies: (1) the number of extreme dimensional values in each stage was positively related to the amount of training required for pigeons to acquire the discrimination; (2) attentional tradeoffs were most often observed when three or four dimensions were being trained; and (3) throughout training, the number of dimensional values in the S^?s that differed from the S⁺ was positively related to their discriminability from S⁺.     

Exploring and Estimating the Revenues and Profits of Participants in Stolen Data Markets

Researchers have begun to explore the problem of mass data breaches, where consumer information is acquired by cybercriminals and sold in open markets on-line. Although studies document the social processes of the market and relationships between buyers and sellers, few have considered the revenues earned from market transactions. This study explored these issues using a sample of threads from 10 Russian language and 3 English language Web forums used to sell stolen data. Estimates were generated on the total number of transactions completed by participants along with the advertised prices for the two most common forms of personal information sold. The findings demonstrated that buyers may earn a range of revenues from the sale of stolen data, although this figure was smaller than the potential profits earned from fraudulent use and identity crimes by data buyers. The implications of this study for cybercrime research and policy are explored in detail.     

Social-cognitive antecedents of hand washing: Action control bridges the planning–behaviour gap

Objectives. To examine motivational and volitional factors for hand washing in young adults, using the Health Action Process Approach (HAPA) as a theoretical framework.

Design. In a longitudinal design with two measurement points, six weeks apart, university students (N = 440) completed paper-based questionnaires.

Main outcome measures. Prior hand washing frequency, self-efficacy, outcome expectancies, intention and action planning were measured at baseline, and coping planning, action control and hand washing frequency were measured at follow-up.

Results. A theory-based structural equation model was specified. In line with the HAPA, the motivational factors of self-efficacy and outcome expectancies predicted intention, whereas the volitional factors of planning and action control mediated between intention and changes in hand washing frequency. Action control was confirmed as the most proximal factor on hand washing behaviour, thus representing a bridge of the planning–behaviour gap.

Conclusions. Both motivational and volitional processes are important to consider in the improvement of hand hygiene practices. Moreover, the statistically significant effects for planning and action control illustrate the importance of these key self-regulatory factors in the prediction of hand hygiene. The current study highlights the importance of adopting models that account for motivational and volitional factors to better understand hand washing behaviour.     

Developmental Changes in Discrepancies Between Adolescents’ and Their Mothers’ Views of Family Communication

Prior work indicates that adolescents perceive the family more negatively than do their parents. These discrepant views comprise some of the most robust observations in psychological science, and are observed on survey reports collected in vastly different cultures worldwide. Yet, whether developmental changes occur with these discrepant views remains unclear. In a sample of 141 adolescents and their mothers, we examined 1-year developmental changes in discrepancies between parents’ and adolescents’ views of family functioning. We focused on discrepant views about a relatively covert domain of family functioning (i.e., internal views of open communication) and a relatively overt domain of such functioning (i.e., views about observable communication problems). We observed significant developmental changes in discrepant views for open communication, but not for communication problems. These findings have important implications for research examining links between discrepant views of family functioning and whether these discrepancies serve as risk or protective factors for adolescent psychosocial functioning.     

Change in Symptoms and Personal Construct Structure in Anxiety Disorders: A Preliminary Study on the Effects of Constructivist Therapy

In recent years, constructivist psychotherapy has evolved as a plausible treatment for different disorders. The present study aimed to explore the effectiveness of this therapy in terms of symptom improvement and changes in the personal construct system. Forty-seven anxiety clients received brief integrative constructivist therapy. Scores on symptom and personal construct measures decreased after the treatment, but not all of them showed a statistically significant change. The percentage of clients with implicative dilemmas decreased after psychotherapy. The results provide preliminary support for the effectiveness of brief constructivist psychotherapy as a treatment for anxiety disorders in primary care services. Several limitations are acknowledged. Further controlled research is needed.     

Associations Between Attachment Narratives and Self-Report Measures of Attachment in Middle Childhood: Extending Evidence for the Validity of the Child Attachment Interview

The assessment of attachment security in infancy and adulthood is well-studied, but middle childhood has been relatively neglected in the literature. The Child Attachment Interview (CAI) represents a promising assessment of attachment in middle childhood; recent evidence supports its reliability and validity in restricted samples. We assessed the construct validity of the CAI among a diverse sample of 104 8–12 year-old children (M _age  = 9.80 years; 50 boys; 49 % family income <$40,000; 38 % Latino/a). We evaluated associations among CAI variables and self-report measures of attachment (convergent validity). Further, we evaluated whether CAI variables uniquely relate to theoretically-relevant constructs (internalizing symptoms) above and beyond self-reported attachment (incremental validity) and a theoretically-distinct construct, child temperament (discriminant validity). Our findings support the CAI’s validity, and have important implications for assessing and understanding attachment processes in middle childhood, as well as their development across the lifespan.     

Familial Influences on Dating Violence Victimization Among Latino Youth

Despite theoretical and empirical evidence suggesting that the family environment plays a central role in Latino youth development, relatively little is known about how family processes influence dating violence victimization among Latino adolescents. To address this gap in the literature, we used data from 210 Latino parents and their 13- to 15-year-old adolescents to examine associations between several different family processes, including both parenting practices (parent monitoring, parent–adolescent communication) and aspects of the family relational climate (family cohesion, family conflict, acculturation conflict) and psychological, physical, and sexual dating violence victimization. Consistent with expectations, lower levels of family cohesion and higher levels of family and acculturation conflict were associated with risk for dating violence victimization, although associations varied depending on victimization type. In contrast, neither parental monitoring nor parent–adolescent communication was significantly associated with any type of dating violence victimization. In addition, we found that parent, but not teen, Anglo-American acculturation was associated with higher dating violence victimization risk. Findings suggest that family-based dating abuse prevention programs for Latino youth should seek to increase family cohesion and decrease family conflict, including acculturation-based conflict.     

A Comparison of Posttraumatic Growth After Acquired Brain Injury or Myocardial Infarction

Posttraumatic growth (PTG) is known to occur following acquired brain injury (ABI). It is not yet known to what extent PTG experiences following ABI are unique to the neurological nature of the injury. We investigated PTG in survivors of ABI or myocardial infarction (MI); MI is comparable to ABI but does not have a primary neurological element. Thirty-three ABI survivors (age M = 51.6, SD = 12.4; 52% male; years since injury M = 5.5, SD = 5.3) and 47 MI survivors (age M = 66.4, SD = 9.9; 79% male, years since injury M = 9.9, SD = 8.6) completed a survey including the Posttraumatic Growth Inventory (PTGI). Unadjusted analyses showed no significant group differences on PTGI total score (ABI M = 54.0, SD = 19.6; MI M = 54.6, SD = 23.6; d = .03, p = .902) or on any of the five subscales, but analyses adjusted for covariates showed that scores on “Relating to others” were higher in participants with ABI (unstandardized coefficient = 5.43; 95% CI .27, 10.60; p = .039). Open-ended comments revealed aspects of growth in both samples that were not directly captured by the five PTGI factors.