A relational differential outcomes effect: pigeons can classify outcomes as “good” and “better”

In a conditional discrimination each of two sample stimuli indicates which of two comparison stimuli is correct. When correct choice following each conditional stimulus is followed by a different outcome (one kind of food following one, a different kind of food following the other) it often facilitates acquisition and improves memory. In transfer designs, in which two different conditional discriminations are followed by the same two differential outcomes, outcome expectation can be shown to be sufficient for comparison choice. That is, the samples from one conditional discrimination are matched to comparisons from the other conditional discrimination based on the common outcomes alone. In the present study we asked if for pigeons the relative value of the differential outcomes (higher versus lower value) can serve as the basis for comparison choice, independent of other characteristics of the outcomes and of differential sample responding. That is, would different outcomes that could be described as “good” and “better” form two stimulus classes. For one conditional discrimination, the differential outcomes involved differential probability of reinforcement for choice of the correct comparison stimulus (0.80 vs. 0.20 for correct choice of the two comparisons, respectively). For the other conditional discrimination, the differential outcomes involved differential responding to the two comparison stimuli (5 pecks vs. 20 pecks to the correct comparisons, respectively). On test trials, when conditional stimuli from the two conditional discriminations were interchanged and the relative value of the differential outcomes could serve as the only basis for comparison choice, we found positive transfer. The results indicate that relational attributes of outcomes can serve as effective cues for comparison choice.     

The mystery of “should”: Procrastination,delay, and reactance in academic settings

The study explores the effect of trait reactance on procrastination and delay in students of two study programmes differing in the structuring of academic tasks and the role they play in course assessment. Both subsamples (n = 97 and 139) completed measures of trait reactance, chronic academic procrastination, self-reported task procrastination and actual task delay. The data were analyzed using path analysis and SEM. As hypothesized, psychological reactance positively predicted procrastination, especially the ‘chronic delay’ component underlying all three procrastination-related measures. However, some of the effect of reactance on this delay-dependent component of procrastination was apparently suppressed by what might have been a subjective (delay-independent) component of self-reported task procrastination. Furthermore, reactance was significantly related to delay only when good performance on the task was of relatively high importance. Apart from providing evidence for a possible link between reactance and procrastination, the results also demonstrate that it is important to distinguish between the experiential and objective (temporal) components of procrastination, as the two might be represented by completely different nomological networks.     

Understanding senile “confusion”: Sources and stages

A psychological phenomenon frequently encountered in pastoral care is senile “confusion.” Disorientation can result from sensory deprivation, sociocultural stress, or organic processes. The major cause of confusion among the elderly is dementia resulting from primary neuronal degeneration. Social, psychological, and pastoral support may reduce the degree of confusion or retard its progress toward advanced stages.     

The “lag effect” in dichoptic viewing

Ten subjects were asked to report both of two different consonant-vowels (CVs) presented to the same foveal area, but in different eyes (“dichoptically”). Stimuli were presented at stimulus-onset asynchronies (SOAs) ranging from 0 to 150 msec in 25-msec steps. Correct identifications were significantly depressed for the eye receiving the leading stimulus at SOAs of 25 to 75 msec. Monoptic data from three subjects indicated no significant reductions in correct identification as a function of SOA. The dichoptic results can be understood in terms of current theories of visual backward masking and are similar to the “lag effect” observed with dichotic listening to speech stimuli. Similarity of results for the two modalities suggests a similar “two-process” explanation may underlie both phenomena.     

The “other-accent” effect in voice recognition

The current paper examines an “other-accent” effect when recognising voices. English and Scottish listeners were tested with English and Scottish voices using a sequential lineup method. The results suggested greater accuracy for own-accent voices than for other-accent voices under both target-present and target-absent conditions. Moreover, self-rated confidence in response to target-absent lineups suggested greater confidence for own-accent voices than other-accent voices. As predicted, the other-accent effect noted here emerged more strongly for English listeners than for Scottish listeners, and these results are discussed within an expertise framework alongside both other-race effects in face recognition, and other-accent effects in word recognition. Given these results, caution is advised in the treatment of earwitness evidence when recognising a voice of another accent.     

The “Sh-Ape Bias” in Non-Linguistic Categorization: Comparisons between Children and Other Apes

ABSTRACT

Children show a bias toward information about shape when labeling or determining category membership for novel objects. The body of work with human children suggests that the shape bias is not restricted to linguistic contexts but is highly contingent on task demands. Testing nonhumans could provide additional information about the salience of shape cues in the absence of linguistic relevance. In order to assess the salience of shape versus color using an identical task in children and apes, we presented two adult zoo-housed chimpanzees (Pan troglodytes) and 56 three–five-year-old children with a relational matching task in which samples and comparison stimuli matched on either shape or color. Whereas children of all ages performed above chance on the task, chimpanzees performed at close to chance levels overall. However, closer inspection revealed that, whereas children performed better on shape (86%) versus color trials (78.5%), chimpanzees showed the opposite pattern, performing at chance on shape trials (49%) and above chance on color trials (72%). Children also made quicker responses on shape versus color trials, whereas chimpanzees showed the opposite pattern. Whereas shape is a highly salient cue for Western children, color may be a more salient natural cue in nonhuman primates’ natural environments. Thus, the shape bias does not appear to be an evolutionarily ancient bias when assigning category membership.     

Memorization and “feature selection” in the acquisition of natural concepts in pigeons

Pigeons were trained on a successive discrimination task using complex visual stimuli. In Experiment 1, each photographic slide that contained a person had a corresponding “matched background” slide, one that showed the same scene with the person removed. Birds trained on a human positive discrimination acquired the matched pairs problem, but birds trained on a human negative discrimination performed poorly. This suggests a feature-positive effect for complex stimulus categories. Memorization control groups that were trained on a human-irrelevant discrimination also performed poorly with matched slides. However, subsequent experiments demonstrated that these effects depended on the use of matched pairs of slides. The human-as-feature effect was not obtained when human positive and human negative groups were subsequently trained with non-matched slides (Experiment 2), and memorization control groups acquired a human-irrelevant discrimination when trained with nonmatched slides (Experiment 3). Additional tests conducted in Experiments 2 and 3 found that performance was not disrupted when either the reinforced or nonreinforced slides were replaced. This effect was obtained when the category was relevant to the discrimination (Experiment 2) and when the category was irrelevant to the discrimination (Experiment 3). Finally, Experiment 4 demonstrated that memorization of a set of slides is possible when slides are sufficiently dissimilar, (i.e., nonmatched) but performance is not as good when the category exemplars are irrelevant to the discrimination.     

The “false consensus effect”: An egocentric bias in social perception and attribution processes

Evidence from four studies demonstrates that social observers tend to perceive a “false consensus” with respect to the relative commonness of their own responses. A related bias was shown to exist in the observers' social inferences. Thus, raters estimated particular responses to be relatively common and relatively unrevealing concerning the actors' distinguishing personal dispositions when the responses in question were similar to the raters' own responses; responses differing from those of the rater, by contrast, were perceived to be relatively uncommon and revealing of the actor. These results were obtained both in questionnaire studies presenting subjects with hypothetical situations and choices and in authentic conflict situations. The implications of these findings for our understanding of social perception phenomena and for our analysis of the divergent perceptions of actors and observers are discussed. Finally, cognitive and perceptual mechanisms are proposed which might account for distortions in perceived consensus and for corresponding biases in social inference and attributional processes.     

The interactional effect between employees’ perceived materialistic rewards and marital status on attitudinal and behavioral outcomes: An empirical investigation

Current Psychology - This study investigates whether the degree of materialistic rewards perceived by employees leads to creative behavior for organizational change, and identifies possible...     

The Craik-O’Brien-Cornsweet effect: New varieties and their theoretical implications

New visual displays related to the Craik-O’Brien-Cornsweet effect are presented and their relevance for theories of the effect is assessed. The displays include a luminance cusp that does not induce the standard effect, an illusory chessboard, a brightness variant of the impossible staircase, and a display in which brightness varies with stimulus motion. Theories of the effect are grouped within the nonisomorphistic, the cognitive, and the mechanistic approaches. The nonisomorphistic approach is criticized as being seriously incomplete. Existing cognitively oriented proposals are criticized as inadequate. Mechanistic theories are divided into integration theories, which model the visual processing stages with standard mathematical operations such as differentiation and integration, and filling-in theories, which stress the processing dynamics of interconnected neural networks. The reported variations of the Craik-O’Brien-Cornsweet effect support the latter class of theories.     

A year’s memories: The calendar effect in autobiographical recall

When asked to recall autobiographical events from the past year, students tend to recall more incidents from the beginning and the end of school terms than from other periods. We investigated thiscalendar effect in Experiment 1 by comparing free recall at schools with different academic calendars. The event distributions tracked the individual calendars, helping to eliminate the possibility that the calendar effect is due to seasonal, nonschool factors, such as holidays. In Experiments 2–4, we checked explanations based on the ideas that events at term boundaries are more important or distinctive than others, that events are incorrectly dated too near the boundaries, and that boundaries serve as implicit cues for recall. These experiments revealed no evidence that importance or errors in dating could explain the effect. Manipulating cues, however, did change the size of the effect, implicating retrieval from very long-term memory as the effect’s source. We suggest that when people have to search episodic memory, they consider their own calendar rhythms (such as a student’s academic schedule) and let the temporal structure of their personal context guide their search.     

The gap between athletes’ and parents’ perceptions of parental practices: The role of gender

ObjectivesThe present study explored the differences between athletes’ and parents’ perceptions of parental practices (i.e., active involvement, directive, pressure, praise, and understanding behaviours implemented by parents in the context of their child’s sport) by considering athletes’ and parents’ gender.Designcross-sectional study.MethodParents (N = 352) and athletes (N = 256, M = 14.72 years) completed a questionnaire to measure their perceptions of parental practices in sport. Zero-order correlations were computed for the entire sample and each sub-group (i.e., father-daughter, father-son, mother-daughter, and mother-son). One-level multilevel model (level 1: respondent) was computed to measure the influence of the respondent on the perceptions of parental practices. Two-level multilevel model (level 1: respondent, level 2: dyad) estimated the impact of the athletes’ gender, parents’ gender, and their interaction on the differences in perceptions.ResultsCorrelations highlighted relatively modest concordance between perceptions of parents and adolescents. Multilevel models showed that compared to athletes, parents reported significantly less frequent use for directive behaviours (β = −0.29) and more frequent use for active involvement (β = −0.18) and praise and understanding (β = 0.27). Correlations and multilevel models showed that the differences between athletes’ and parents’ perceptions of parental practices differed according to gender. The differences in perceptions of the directive behaviours (β = −0.22) and active involvement (β = 0.22) were higher when the father was involved in the dyad compared to the mother.     

Metacognition in the classroom: The association between students’ exam predictions and their desired grades

Students are overconfident when making grade predictions, and worse, the lowest-performing students are generally the most overconfident. Because metacognitive accuracy is associated with academic performance, multiple studies have attempted to improve metacognitive accuracy with mixed results. However, these studies may be of limited use because we do not understand the types of information university students use to make performance predictions. The current studies examined the possibility that university students’ predictions are associated with their desires—the grade they want to receive. Studies 1–4 demonstrated that students’ desired grades were strongly associated with their grade predictions across different courses, universities, and measurement strategies. Study 4 also showed that, if warned about the previous results, students could reduce their reliance on their desired grades and improve the accuracy of their predictions relative to control. Together, results demonstrated that students’ exam predictions are associated with their desired grades.     

The function debate: between “cheap tricks” and evolutionary neutrality

We examine the use of the notion of natural selection in the philosophical debate on functions in biology. This debate has been largely shaped by the way in which different accounts assess various selective pressures in justifying claims about biological functions. Cummins (Functions: new essays in the philosophy of psychology and biology. Oxford University Press, Oxford, pp 157–172, 2002), one of the main proponents of the causal role account of biological functions, argues that a correctly understood neo-Darwinian notion of natural selection has nothing to do with functional talk in biology. In this paper, we counter Cummins’ account by showing that progress in the molecular approaches to evolutionary biology—specifically scientific data available in neo-functionalization research—offers valuable support to the etiological selectionist approach to functions in biological and biologically-related sciences. Finally, we use the presented data to build our own account of biological functions, which tries to avoid the wrong turns taken by both major strands in the biological function debate, namely causal role and etiological accounts. According to our account, the function of a certain gene or a protein in the biological system that contains it is a particular causal activity, or a group of causal activities whose manifestation is in a specific way determined by corresponding mechanisms of genetic expression. Also, we argue that in many important cases this particular expression of genetic activity was positively selected at a certain point in evolutionary history. Since we take selection as an important but not the only factor that grounds biological functions, we are committed to a weak etiological account.     

The “soap opera” effect in story recall

When people learn a series of actions of a character, their memory is strongly influenced, we suggest, by beliefs about that character’s motives. Motives serve as schema for deciding the meaning of the actions, their importance, and their interconnections. In two experiments, subjects read and later remembered some dull activities of a character. Experimental subjects knew what this character was worrying about (e.g., an unwanted pregnancy); control subjects did not. Recall and recognition showed that motive subjects distorted many of the colorless events to be motive relevant. Although the motive schema helped connect the disparate actions, it interfered with accurate recording and recall of the details.     

“The object in the mirror of genetic transcendentalism: Lacan’s objet petit a between visibility and invisibility,”

One of the more superficially perplexing features of Lacan’s notion of objet petit a is the fact that he simultaneously characterizes it as both non-specularizable (i.e., incapable of being captured in spatio-temporal representations) and specular (i.e., incarnated in visible avatars). This assignment of the apparently contradictory attributes of visibility and invisibility to object a is a reflection of this object’s strange position at the intersection of transcendental and empirical dimensions. Indeed, this object, which Lacan holds up as his central psychoanalytic discovery, raises important philosophical questions about the transcendental-empirical distinction, arguably short-circuiting in interesting, productive ways this dichotomy and many of its permutations. This article seeks to achieve two aims: one, to clarify how and why Lacan situates object a between the specular and the non-specular; and, two, to extract from the results of this clarification a preliminary sketch of a post-Lacanian transcendentalism that is also thoroughly materialist.     

The joint effect of forward and backward visual masking: Some comments on Uttal’s “Character in the hole” experiment

The joint effect of forward and backward visual masking appears to be more extended in time than that predicted from an algebraic summation of individual forward and backward masking effects. It is suggested that this apparent extension of the temporal range of masking arises from the summation of forward and backward masking effects which in themselves are insufficient to influence observed performance. Such latent masking effects are possible if it is not assumed that when stimulus identification reaches the 100% level the mask has no effect at all on the stimulus.