Children’s success at detecting circular explanations and their interest in future learning

These studies explore elementary-school-aged children’s ability to evaluate circular explanations and whether they respond to receiving weak explanations by expressing interest in additional learning. In the first study, 6-, 8-, and 10-year-olds (n = 53) heard why questions about unfamiliar animals. For each question, they rated the quality of single explanations and later selected the best explanation between pairs of circular and noncircular explanations. When judging single explanations, 8- and 10-year-olds, and to some extent 6-year-olds, provided higher ratings for noncircular explanations compared to circular ones. When selecting between pairs of explanations, all age groups preferred noncircular explanations to circular ones, but older children did so more consistently than 6-year-olds. Children who recognized the weakness of the single circular explanations were more interested in receiving additional information about the question topics. In Study 2, all three age groups (n = 87) provided higher ratings for noncircular explanations compared to circular ones when listening to responses to how questions, but older children showed a greater distinction in their ratings than 6-year-olds. Moreover, the link between recognizing circular explanations as weak and interest in future learning could not be accounted for solely by individual differences in verbal intelligence. These findings illustrate the developmental trajectory of explanation evaluation and support that recognition of weak explanations is linked to interest in future learning across the elementary years. Implications for education are discussed.     

Chickadees discriminate contingency reversals presented consistently,but not frequently

Chickadees are high-metabolism, non-migratory birds, and thus an especially interesting model for studying how animals follow patterns of food availability over time. Here, we studied whether black-capped chickadees (Poecile atricapillus) could learn to reverse their behavior and/or to anticipate changes in reinforcement when the reinforcer contingencies for each stimulus were not stably fixed in time. In Experiment 1, we examined the responses of chickadees on an auditory go/no-go task, with constant reversals in reinforcement contingencies every 120 trials across daily testing intervals. Chickadees did not produce above-chance discrimination; however, when trained with a procedure that only reversed after successful discrimination, chickadees were able to discriminate and reverse their behavior successfully. In Experiment 2, we examined the responses of chickadees when reversals were structured to occur at the same time once per day, and chickadees were again able to discriminate and reverse their behavior over time, though they showed no reliable evidence of reversal anticipation. The frequency of reversals throughout the day thus appears to be an important determinant for these animals’ performance in reversal procedures.     

Mental ability and the effect of pattern violation discrimination on P300 and mismatch negativity

The relation between mental ability and the ability to detect auditory pattern violations was examined using event-related potential measures, specifically P300 and mismatch negativity (MMN). Thirty female volunteers were presented with a two tone alternating pattern containing infrequent repetition violations in passive (ignore) then active response conditions. Task difficulty was manipulated by varying the tonal separation between the two constituent tones of the pattern, i.e., separated by 1 or 6 semitones. In the active pattern violation discrimination condition, the greater difficulty of the 1 semitone discrimination was confirmed by reduced accuracy, more false positive responses, longer response times, and greater variability in response times than for 6 semitones. Higher ability (HA) was associated with greater response accuracy, shorter response times, less variable response times, shorter P300 latency, and greater P300 amplitude, predominantly in the more difficult 1 semitone condition. These effects are indicative of greater facility and speed of discriminating pattern violations for HA. In the passive condition, HA was associated with larger MMN amplitude to the deviant tones in both semitone conditions. The MMN effect indicates that the facility in pattern violation discrimination develops prior to consciousness, and cannot be attributed to conscious processes like focussed attention.     

Links between attachment orientations and dispositional and diary–based measures of disclosure in dating couples: A study of actor and partner effects

Issues concerning the influence of attachment characteristics on own and partner’s disclosure were addressed using a sample of 113 couples in medium–term dating relationships. Individual differences in attachment were assessed in terms of relationship anxiety and avoidance. Disposition to disclose was assessed using questionnaire measures of self–disclosure, relationship–focused disclosure, and the ability to elicit disclosure from the partner; in addition, structured diaries were used to assess aspects of disclosure (amount, intimacy, emotional tone, and satisfaction) in the context of couples’ everyday interactions. Couple–level analyses showed that avoidance strongly predicted dispositional measures of disclosure, whereas anxiety (particularly partner’s anxiety) was related to negative evaluations of everyday interactions. Interactive effects of attachment dimensions and gender were also obtained, highlighting the complexity of communication behavior. The results are discussed in terms of the goals and strategies associated with working models of attachment.     

Subtraction by addition

University students’ self-reports indicate that they often solve basic subtraction problems (13?6=?) by reference to the corresponding addition problem (6+7=13; therefore, 13?6=7). In this case, solution latency should be faster with subtraction problems presented in addition format (6+_=13) than in standard subtraction format (13+6=_). In Experiment 1, the addition format resembled the standard layout for addition with the sum on the right (6+_=13), whereas in Experiment 2, the addition format resembled subtraction with the minuend on the left (13=6+_). Both experiments demonstrated a latency advantage for large problems (minuend > 10) in the addition format as compared with the subtraction format (13+6=_), although the effect was larger in Experiment 1 (254 msec) than in Experiment 2 (125 msec). Small subtractions (minuend ≤ 10) in Experiment 1 were solved equally quickly in the subtraction or addition format, but in Experiment 2, performance on small problems was faster in the standard format (5?3=_) than in the addition format (5=3+_). The results indicate that educated adults often use addition reference to solve large simple subtraction problems, but that they rely on direct memory retrieval for small subtractions.     

The importance of the organization of partner knowledge in understanding perceptions of relationship quality and conflict resolution behavior in married couples

This research investigated how the organization of partner knowledge was related to global relationship evaluations and specific interpersonal behaviors in a sample of 107 married couples. Spouses first completed several questionnaires and later participated in a 12-min videotaped conflict resolution task. As expected, wives in older relationships exhibited greater marital quality (self-reported and observed) when they had (a) an integrative knowledge structure and used many negative traits to describe their spouse or (b) a compartmentalized knowledge structure and used few negative traits to describe their spouse. Greater marital quality, however, was found for husbands when they were (a) in older relationships and possessed an integrative structure or (b) in newer relationships and possessed a compartmentalized structure. Exploratory analyses suggested that in some circumstances people may have greater marital quality when they share an organizational style with their spouse.     

Assessment procedures for narcissistic personality disorder: a comparison of the personality diagnostic questionnaire-4 and best-estimate clinical judgments

This study examined the degree of correspondence between two assessments for narcissistic personality disorder (NPD) in a mixed clinical and community sample--one using a self-report measure (Personality Diagnostic Questionnaire-4) and the other using clinical judgments derived from an assessment based on the longitudinal, expert, all data (LEAD) methodology. NPD scores demonstrated moderate convergence for the total scores but weak convergence for the individual criteria. The authors also examined the correlates created by each set of NPD scores using Cloninger's Temperament and Character Inventory (TCI). The NPD scores demonstrated areas of convergence (e.g., Cooperativeness, Self-directedness) and divergence (i.e., Harm Avoidance, Novelty Seeking) with these personality scores. These divergences may be due to the wording of certain items on the Personality Diagnostic Questionnaire-4 NPD scale, which may require rewriting if it is to provide an assessment that is more highly convergent with the Diagnostic and Statistical Manual of Mental Disorders NPD construct.