Obey or not obey? Dogs (Canis familiaris) behave differently in response to attentional states of their owners

Sixteen domestic dogs (Canis familiaris) were tested in a familiar context in a series of 1-min trials on how well they obeyed after being told by their owner to lie down. Food was used in 1/3 of all trials, and during the trial the owner engaged in 1 of 5 activities. The dogs behaved differently depending on the owner's attention to them. When being watched by the owner, the dogs stayed lying down most often and/or for the longest time compared with when the owner read a book, watched TV, turned his or her back on them, or left the room. These results indicate that the dogs sensed the attentional state of their owners by judging observable behavioral cues such as eye contact and eye, head, and body orientation.     

The ad coefficient as a descriptive measure of the within‐group agreement of ratings

The a_d coefficient was developed to measure the within‐group agreement of ratings. The underlying theory as well as the construction of the coefficient are explained. The a_d coefficient ranges from 0 to 1, regardless of the number of scale points, raters, or items. With some limitations the measure of the within‐group agreement of different groups and groups from different studies is directly comparable. For statistical significance testing, the binomial distribution is introduced as a model of the ratings' random distribution given the true score of a group construct. This method enables a decision about essential agreement and not only about a significant difference from 0 or a chosen critical value. The a_d coefficient identifies a single true score within a group. It is not provided for multiple true score settings. The comparison of the a_d coefficient with other agreement indices shows that the new coefficient is in line with their outcomes, but does not result in infinite or inappropriate values.     

Controllability and hindsight components: Understanding opposite hindsight biases for self-relevant negative event outcomes

There is an anomaly in the hindsight bias literature with respect to hindsight effects obtained after self-relevant negative event outcomes: Whereas some studies have reported reduced hindsight bias, others have shown increases. This article contrasts two explanations for the anomaly. The first points to an influence of perceived control over the event outcome: In hindsight, people decrease foreseeability (and hence, responsibility and blame) for controllable events, but they increase the perceived inevitability of uncontrollable events for coping reasons. The second explanation, derived from a reconception of hindsight bias in terms of separate components (Blank, Nestler, von Collani, & Fischer, 2008), traces the anomaly to differences in the observed hindsight components: Hindsight decreases are to be expected for foreseeability, whereas increases are restricted to the inevitability component. Our experiment (N=210) manipulated controllability and the hindsight component orthogonally and showed strong support for the component explanation, but also some influence of perceived control.     

Short- and long-term effectiveness of two communication training modalities with distressed couples

Abstract

Communication training is a widely practiced therapeutic approach for the treatment of marital discord. Although there is some empirical support for the theoretical assumptions underlying constructive communication patterns, it has not yet been ascertained whether changing these behaviors is sufficient in bringing about stable changes in distressed marriages. The present study was designed to investigate the efficacy of this treatment approach in a conjoint and conjoint group modality. Following therapy, conjoint couples (n = 16) when compared with a waiting list control group (n = 17) showed improvement on five of the seven outcome variables. Couples in the conjoint group modality (n = 13) improved on only two of the seven variables. Follow-up assessments one year after treatment showed that initial gains had been substantially reduced. On the basis of these results it is now open to question whether conjoint group treatments are an appropriate treatment modality for even moderately distressed couples.     

Increasing Initial Leadership Effectiveness: Assisting Both Women and Men

In this experiment, we manipulated leadership appointment in 3 ways for both a woman and a man. In accord with status characteristics theory, we found that interventions designed to increase the status of the appointee allow the new leader to be more influential and thus more effective. In addition, we found that when a woman is appointed leader with no reason offered for her appointment, followers are willing to be led by her, but, following the theory of motivated reasoning, they will search the context for a plausible reason for their decisions. Suggestions are offered for organizations that want to facilitate the effectiveness of new women leaders; additional recommendations are made for assisting new women leaders.     

Measuring saccade curvature: A curve-fitting approach

Saccade curvature is becoming a popular measure for detecting the presence of competing saccadic motor programs. Several different methods of quantifying saccade curvature have been employed. In the present study, we compared these metrics with each other and with novel measures based on curve fitting. Initial deviation metrics were only moderately associated with the more widely used metric of maximum curvature. The latter was strongly related to a recently developed area-based measure and to the novel methods based on second- and third-order polynomial fits. The curve-fitting methods showed that although most saccades curved in only one direction, there was a population of trajectories with both a maximum and a minimum (i.e., double-curved saccades). We argue that a curvature metric based on a quadratic polynomial fit deals effectively with both types of trajectories and, because it is based on all the samples of a saccade, is less susceptible to sampling noise.     

The attentional blink is susceptible to concurrent perceptual processing demands

In a rapid serial visual presentation stream processing of a first target (T1) impairs detection or identification of a second target (T2) that appears within 500 ms after T1. This effect characterizes the so-called attentional blink (AB). To evaluate contemporary information-processing accounts of the AB phenomenon in terms of the underlying processing mechanisms the present study examined the potential influence of Task 1 difficulty on the AB effect. To this end, T1 contrast and T1 response requirements were systematically varied across four experiments. Experiment 1 ruled out a mere sensory basis of the contrast manipulation on T2 performance. When only T2 had to be reported (Experiment 2) an AB effect occurred that was slightly modulated by T1 contrast. When report of both T1 and T2 was required in a standard AB task (Experiment 3), the magnitude of the AB depended to a larger extent on stimulus contrast, and it increased further when speeded T1 choice responses were additionally required (Experiment 4). On the basis of the present impact of Task 1 difficulty on the AB effect we conclude that processing limitations cause the AB phenomenon. We discuss such limitations in terms of perceptual (T1 consolidation) and central (response selection) bottleneck processes.     

From Information‐Seeking Behavior to Meaning Engagement Practice.

We invite readers of this colloquy on information‐seeking behavior to reconsider the worldview that structures scholarly and practical thinking about information‐seeking behavior as a mode of human activity. We propose an alternative formulation–meaning engagement practice–to draw into relief the assumptions that tacitly underpin the investigation of information‐seeking behavior. We develop this alternative by contrasting information with meaning, seeking with engagement, and behavior with practice. By rethinking information‐seeking behavior through the lens of meaning engagement practice, avenues for theoretical development and systematic investigation of communication more generally are recovered. We ground our case for meaning engagement practice in four research contexts: modeling the user in information mediation, information access and browsing as relevant processes for understanding information‐seeking behavior, the products and by‐products of an information‐seeking behavior worldview in psychiatric evaluation, and approaches to the design of mediation practices that encourage reflection.