Cross-species referential signalling events in domestic dogs (<Emphasis Type="Italic">Canis familiaris</Emphasis>)

Referential gestures are used by a signaller to draw a recipient’s attention to a specific object, individual or event in the environment. These gestures have received much research attention in relation to human and non-human primates with great apes being shown to possess impressive gestural repertoires. Domestic dogs (Canis familiaris) meanwhile provide an ideal non-primate candidate for investigating referential signalling due to their unique relationship with humans that centres on non-verbal communication with frequent interaction. Here we observed 37 pet dogs in their own homes. Owners recorded 242 videos containing 47 potential referential gesture events. We analysed those recordings to reveal evidence of 19 referential gestures performed by domestic dogs during everyday communicative bouts with humans, showing that the gestures conform to the five features of referential signalling. Our study exposes impressive gesturing abilities in a non-primate mammal; especially when viewed in the context of the cross-species rather than intraspecific communication.     

Gender differences in environmental concern among college students

The debate over gender differences in environmental concern is sharply divided. One set of theories expects women to be more environmentally concerned than men while another set expects the opposite to be true. This study, based on a random sample of college students at a medium-sized midwestern university, tests the impact of gender on environmental concern while controlling for class standing and family income. The sample used in the final analysis consisted of 340 white students and 25 nonwhite students. Males were found to be slightly more likely than females to express environmental concern. Theoretical refinements regarding the effects of gender are drawn from marginality theory, and the overall relevance of gender is addressed.     

Effect of static visual acuity on dynamic visual acuity: a pilot study

The aim of this pilot study was to evaluate whether dynamic visual acuity changes with or without refractive correction. 42 healthy enrolled subjects with normal vision were divided into two age-matched groups. In Group A, dynamic visual acuity was measured first with the refractive error fully corrected and then without. In Group B, dynamic visual acuity measurements were taken in the reverse order of that performed by Group A. The measurements were binocularly performed five times using free-head viewing after dynamic visual acuity values were stable. Significant changes in dynamic visual acuity (static visual acuity 20/20 vs 12/20) were observed in both Group A (171.6 +/- 36.0 deg./sec. vs 151.8 +/- 39.6 deg./sec., Wilcoxon test, p < .001) and Group B (169.8 +/- 30.0 deg./sec. vs 151.2 +/- 36.0 deg./sec., Wilcoxon test, p < .001). The interaction was significant (F1.20 = 8.12, p = .009). These results indicated that refractive correction affected dynamic visual acuity.     

Brain activation during the course of sentence comprehension

The purpose of this study is to determine, by functional magnetic resonance imaging, how the activated regions of the brain change as a Japanese sentence is presented in a grammatically correct order. In this study, we presented constituents of a sentence to Japanese participants one by one at regular intervals. The results showed that the left lingual gyrus was significantly activated at the beginning of the sentence, then the left inferior frontal gyrus and left supplementary motor area, in the middle of the sentence, and the left inferior temporal gyrus, at the end of the sentence. We suggest that these brain areas are involved in sentence comprehension in this temporal order.     

The spacing effect in the free recall of homogeneous lists: present and accounted for

Memory performance nearly always improves as a function of the spacing between repetitions. However, previous studies indicated that college students exhibited no spacing effect in the free recall of lists composed exclusively of words sampled from a single semantic category. We explored this puzzling phenomenon in two experiments. We found that the spacing effect in free recall can occur with homogeneous lists. Most interestingly, the effect seems to depend on the number of items (lag) separating spaced repetitions. Short lags between spaced repetitions yield a spacing effect, whereas longer lags do not.     

Marco Conci interviews Stefano Bolognini

Abstract

This paper suggests that the understanding of intersubjectivity, which refers to “the dynamic interplay between the analyst's and the patient's subjective experiences in the clinical situation”, is crucial for psychoanalytic work. The analyst's inner experiences, from the first moment that he or she thinks about or meets the patient, belong to an intersubjective situation. Not only are these experiences a valuable channel through which the inner experiences of the patient can be understood, but—as Theodore Jacobs puts it—they are often complementary to that which comes from the patient. The author tries to illustrate the above through the study of the analytic process in the psychoanalytic therapy of a severely disturbed patient. This therapy from its very early phase led to the reawakening of some of the analyst's old conflicts. The patient's difficulties in tolerating the limits of the analytic setting and using free association are discussed, as are his enactments. The analyst's close observation of the interaction between her and the patient, the permanent engagement with her countertransference, and the use of her inner experiences with the patient helped her to contain the enactments, defined the nature of her interventions, and contributed to the analytic process.     

Relation of employee and manager emotional intelligence to job satisfaction and performance

This study examined the relationships among employees’ emotional intelligence, their manager’s emotional intelligence, employees’ job satisfaction, and performance for 187 food service employees from nine different locations of the same restaurant franchise. We predicted and found that employees’ emotional intelligence was positively associated with job satisfaction and performance. In addition, manager’s emotional intelligence had a more positive correlation with job satisfaction for employees with low emotional intelligence than for those with high emotional intelligence. These findings remain significant after controlling for personality factors. A similar pattern was found for job performance; however, the effect did not meet traditional standards of significance. Applied implications of the results are discussed.     

Temporal control of internal states in pigeons

To understand how animals serially organize complex competing behaviors, we tested pigeons in a sequential task-switching procedure. Daily sessions involved two conditional discrimination tasks that were presented in sequence. In Experiment 1, the first half of a session employed a matching-to-sample task, and the second half tested an oddity-from-sample task. Because the same colors were used for both tasks, these tasks could be solved only by employing a modulating sequential cue. The results of the first experiment revealed that the pigeons could learn this task-switching procedure and that an internal clock was the critical modulator between the tasks. In Experiment 2, we tested a three-alternative choice task. By examining the pattern of errors among choices, the results of this experiment revealed that pigeons learned and used different representations of the choice rules for each half of the experiment. This modulation of the pigeons’ internal states by time has implications for how animals organize their behavior in different settings and holds clues as to the evolution of the serial organization of behavior.