Imitation in young children: when who gets copied is more important than what gets copied

Unlike other animals, human children will copy all of an adult's goal-directed actions, including ones that are clearly unnecessary for achieving the demonstrated goal. Here we highlight how social affiliation is key to this species-specific behavior. Preschoolers watched 2 adults retrieve a toy from a novel apparatus. One adult included irrelevant actions in her demonstration; the other only used actions causally related to opening the apparatus. After both adults took turns demonstrating, 1 left the test room, and the remaining adult gave the apparatus to the child. Children reproduced the irrelevant actions only when given the apparatus by the adult who had demonstrated them, even though the departed adult's actions emphasized how unnecessary these redundant actions were. Our results highlight the specialized skills for participating in cultural groups that have evolved in humans and provide insight into why finding such high fidelity copying in other animals has proven elusive.     

Imagining physically impossible self-rotations: geometry is more important than gravity

Previous studies found that it is easier for observers to spatially update displays during imagined self-rotation versus array rotation. The present study examined whether either the physics of gravity or the geometric relationship between the viewer and array guided this self-rotation advantage. Experiments 1-3 preserved a real or imagined orthogonal relationship between the viewer and the array, requiring a rotation in the observer's transverse plane. Despite imagined self-rotations that defied gravity, a viewer advantage remained. Without this orthogonal relationship (Experiment 4), the viewer advantage was lost. We suggest that efficient transformation of the egocentric reference frame relies on the representation of body-environment relations that allow rotation around the observer's principal axis. This efficiency persists across different and conflicting physical and imagined postures.     

Suboptimal choice by dogs: when less is better than more

The less is more effect, an example of an affect heuristic, can be shown in humans when they give greater value to a set of six baseball cards in perfect condition, than to the same set of six perfect cards together with three additional cards each with some value but in fair condition. A similar effect has been reported in monkeys which will eat both grapes and cucumbers but prefer grapes, when they prefer a single grape over a single grape plus a slice of cucumber. In the present experiment, we tested the less is more effect with a nonprimate but social species, dogs. We used dogs that would eat a slice of carrot and a slice of cheese but preferred the cheese. When we then gave them a choice between a slice of cheese and a slice of cheese plus a slice of carrot, most dogs preferred the single slice of cheese. Thus, the less is more effect appears to occur in several species.     

Decisions beyond boundaries: when more information is processed faster than less

Bounded rationality models usually converge in claiming that decision time and the amount of computational steps needed to come to a decision are positively correlated. The empirical evidence for this claim is, however, equivocal. We conducted a study that tests this claim by adding and omitting information. We demonstrate that even an increase in information amount can yield a decrease in decision time if the added information increases coherence in the information set. Rather than being influenced by amount of information, decision time systematically increased with decreasing coherence. The results are discussed with reference to a parallel constraint satisfaction approach to decision making, which assumes that information integration is operated in an automatic, holistic manner.     

Less is better: when low-value options are valued more highly than high-value options

This research demonstrates a less-is-better effect in three contexts: (1) a person giving a $45 scarf as a gift was perceived to be more generous than one giving a $55 coat; (2) an overfilled ice cream serving with 7 oz of ice cream was valued more than an underfilled serving with 8 oz of ice cream; (3) a dinnerware set with 24 intact pieces was judged more favourably than one with 31 intact pieces (including the same 24) plus a few broken ones. This less-is-better effect occurred only when the options were evaluated separately, and reversed itself when the options were juxtaposed. These results are explained in terms of the evaluability hypothesis, which states that separate evaluations of objects are often influenced by attributes which are easy to evaluate rather than by those which are important. © 1998 John Wiley & Sons, Ltd.     

Congruency effects in dot comparison tasks: convex hull is more important than dot area

The dot comparison task, in which participants select the more numerous of two dot arrays, has become the predominant method of assessing Approximate Number System (ANS) acuity. Creation of the dot arrays requires the manipulation of visual characteristics, such as dot size and convex hull. For the task to provide a valid measure of ANS acuity, participants must ignore these characteristics and respond on the basis of number. Here, we report two experiments that explore the influence of dot area and convex hull on participants’ accuracy on dot comparison tasks. We found that individuals’ ability to ignore dot area information increases with age and display time. However, the influence of convex hull information remains stable across development and with additional time. This suggests that convex hull information is more difficult to inhibit when making judgements about numerosity and therefore it is crucial to control this when creating dot comparison tasks.     

Influence of deontological versus consequentialist orientations on act choices and framing effects: when principles are more important than consequences

A long tradition in decision making assumes that people usually take a consequentialist perspective, which implies a focus on the outcomes only when making decisions. Such a view largely neglects the existence of a deontological perspective, which implies that people are sensitive to moral duties that require or prohibit certain behaviors, irrespective of the consequences. Similarly, recent research has also suggested that people holding “protected values” (PVs) show increased attention to acts versus omissions and less attention to outcomes. The present research investigates the role of deontological versus consequentialist modes of thought and of PVs on framing effects and act versus omission choices. In a modification of Tversky and Kahneman's ( 1981 ) risky choice framing paradigm, we manipulated the framing of the outcomes (positive, negative), as well as whether the certain outcome was associated with an act or inaction. The main results suggest that act versus omission tendencies are linked to deontological focus and PVs. Framing effects, on the other hand, are driven by a consequentialist focus. Copyright © 2007 John Wiley & Sons, Ltd.     

Playing the game the child allots

This paper explores the relationship between play and interpretative verbalization in child analysis. Through examination of a clinical case, the paper distinguishes between two different modes of interpretative interventions in play. It is the contention of the paper that the analyst’s capacity to tolerate tension and respond to the roles the child assigns him widens the area of play, facilitating a space for thinking through. Interpretation is formulated in two distinct ways: (a) interpreting from the context of the roles the analyst assumes within play, respecting the games and facilitating the patient’s understanding; (b) interpreting at a distance from play, on the one hand distinguishing the area of play, and on the other hand analyzing that which occurs verbally and non‐verbally.     

The meaning of "natural": process more important than content

The meaning of the desirable attribute "natural" was explored in two samples, American college students and adults in the Philadelphia jury pool. Participants rated the naturalness of a variety of "natural" entities, before and after they were transformed by operations such as freezing, adding or removing components, mixing with other natural or unnatural entities, domestication, and genetic engineering. Results support four hypotheses. First, the principle of contagion accounts for many aspects of the reduction of naturalness by contact with unnatural entities. Second, chemical transformations reduce naturalness much more than physical transformations do. Third, the history of an entity's processing is more important in determining its naturalness than is the nature of the entity's contents. Fourth, mixing like natural entities (e.g., water from different sources) does not markedly reduce naturalness. The insertion of a gene from another species, the process used in producing genetically modified organisms, produces the biggest drop in naturalness; domestication, a human-accomplished activity that changes genotype and phenotype in major ways, is considered much less damaging to naturalness.     

Consistently modeling the same movement strategy is more important than model skill level in observational learning contexts

The experiment undertaken was designed to elucidate the impact of model skill level on observational learning processes. The task was bimanual circle tracing with a 90° relative phase lead of one hand over the other hand. Observer groups watched videos of either an instruction model, a discovery model, or a skilled model. The instruction and skilled model always performed the task with the same movement strategy, the right-arm traced clockwise and the left-arm counterclockwise around circle templates with the right-arm leading. The discovery model used several movement strategies (tracing-direction/hand-lead) during practice. Observation of the instruction and skilled model provided a significant benefit compared to the discovery model when performing the 90° relative phase pattern in a post-observation test. The observers of the discovery model had significant room for improvement and benefited from post-observation practice of the 90° pattern. The benefit of a model is found in the consistency with which that model uses the same movement strategy, and not within the skill level of the model. It is the consistency in strategy modeled that allows observers to develop an abstract perceptual representation of the task that can be implemented into a coordinated action. Theoretically, the results show that movement strategy information (relative motion direction, hand lead) and relative phase information can be detected through visual perception processes and be successfully mapped to outgoing motor commands within an observational learning context.     

Being better by being right: subjective group dynamics and derogation of in-group deviants when generic norms are undermined

The authors predicted that derogation of group deviants depends on the extent to which in-group norms or values are validated or undermined in a social context. In Experiment 1 participants were less tolerant and derogated in-group deviants more when other in-group members opposed the norm. In Experiment 2 participants derogated in-group deviants more than out-group deviants and than noncategorized individuals, but only when normative in-group members lacked uniformity. In Experiment 3 participants derogated in-group deviants more when there was uncertainty about in-group superiority. These results are consistent with previous research on the black sheep effect (J. M. Marques, V. Y. Yzerbyt, & J. -P. Leyens, 1988) and with the model of subjective group dynamics (D. Abrams, J. M. Marques, N. J. Bown, & M. Henson, 2000; J. M. Marques, D. Abrams, D. Paez, & C. Martinez-Taboada, 1998).     

Safety is more than the antonym of risk

abstract   Even though much research has been devoted to studies of safety, the concept of safety is in itself under-theorised, especially concerning its relation to epistemic uncertainty. In this paper we propose a conceptual analysis of safety. The paper explores the distinc-tion between absolute and relative safety, as well as that between objective and subjective safety. Four potential dimensions of safety are discussed, viz. harm, probability, epistemic uncertainty, and control. The first three of these are used in the proposed definition of safety, whereas it is argued that control should not be included in a reasonable definition of safety. It is shown that strictly speaking, an objective safety concept is not attainable. Instead, an intersubjective concept is proposed that brings us as close as possible to an objective concept.     

Hostility and facial expression in young men and women: is social regulation more important than negative affect?

Behavioral differences may clarify the link between hostility and health. This study examined facial expression. Seventy-two low- and high-hostile undergraduates underwent the Type A Structured Interview (SI) and a test of social anxiety. Facial behavior was measured with the Facial Action Coding System. Low-hostile participants displayed non-Duchenne smiles more frequently than high-hostile participants during the SI. There were no group differences in the expression of disgust. The results identify differences in the nonverbal behavior of hostile people. Restricted use of non-Duchenne smiles may reflect limited use of appeasement, contributing to uncomfortable interpersonal relations and limited social support. The findings are consistent with a behavioral ecology perspective and suggest that social regulation may be as important as negative affect in determining the consequences of hostility.     

Belief bias is stronger when reasoning is more difficult

Three studies examine the influence of varying the difficulty of reasoning on the extent of belief bias, while minimising the possibility that the manipulation would influence the way participants approach the task. Specifically, reasoning difficulty was manipulated by making variations in problem content, while maintaining all other aspects of the problems constant. In Study 1, 191 participants were presented with consistent and conflict problems varying in two levels of difficulty. The results showed a significant influence of problem difficulty on the extent of the belief bias, such that the effect of belief was more pronounced for difficult problems. This effect was stronger in Study 2 (73 participants) where the difference in the difficulty of the problems was purposely accentuated. The results of both studies stress the importance of controlling for problem difficulty when studying belief bias. Study 3 examined one consequence of this, i.e., the classic belief vs. logic interaction could be eliminated by manipulating problem difficulty. Theoretical implications for dual-process accounts of belief bias are also discussed.     

Recall accuracy and illusory memories: when more is less

In two experiments it was revealed that manipulations that increased recall of studied list items also increased false recall of theme-related, critical nonpresented words. In Experiment 1 subjects listened to a series of short word lists, each containing items associatively related to a theme, while engaging in either semantic or nonsemantic processing. On an immediate free recall test semantic processors demonstrated greater correct recall as well as more illusory memories of critical nonpresented items than nonsemantic processors. In Experiment 2, the short study lists were combined to form longer lists that were presented either blocked by theme or in a random presentation order. Retention interval was also varied as participants were tested either immediately, one week after, or three weeks after the study phase. Presenting the target items in a blocked, as opposed to random, format increased recall accuracy, but this was at the expense of a higher intrusion rate for theme-consistent items. Interestingly, the level of false memories was not affected by retention interval even though typical decrements in the recall of study items were observed over time. The results of these experiments highlight the persistence of the false memory effect, as well as pointing to several factors, primarily semantic processing, that may lead to the creation of false memories. Interpretations are offered within the theoretical frameworks of source monitoring and fuzzy trace theory.     

When less is more and when more is more: The mediating roles of capacity and speed in brain-behavior efficiency

An enduring enterprise of experimental psychology has been to account for individual differences in human performance. Recent advances in neuroimaging have permitted testing of hypotheses regarding the neural bases of individual differences but this burgeoning literature has been characterized by inconsistent results. We argue that careful design and analysis of neuroimaging studies is required to separate individual differences in processing capacity from individual differences in processing speed to account for these differences in the literature. We utilized task designs which permitted separation of processing capacity influences on brain-behavior relationships from those related to processing speed. In one set of studies, participants performed verbal delayed-recognition tasks during blocked and event-related fMRI scanning. The results indicated that those participants with greater working memory (WM) capacity showed greater prefrontal cortical activity, strategically capitalized on the additional processing time available in the delay period, and evinced faster WM-retrieval rates than low-capacity participants. In another study, participants performed a digit-symbol substitution task (DSST) designed to minimize WM storage capacity requirements and maximize processing speed requirements during fMRI scanning. In some prefrontal cortical (PFC) brain regions, participants with faster processing speed showed less PFC activity than slower performers while in other PFC and parietal regions they showed greater activity. Regional-causality analysis indicated that PFC exerted more influence over other brain regions for slower than for faster individuals. These results support a model of neural efficiency in which individuals differ in the extent of direct processing links between neural nodes. One benefit of direct processing links may be a surplus of resources that maximize available capacity permitting fast and accurate performance.     

The capacity to generate alternative ideas is more important than inhibition for logical reasoning in preschool-age children

There is little consensus about the nature of logical reasoning and, equally important, about how it develops. To address this, we looked at the early origins of deductive reasoning in preschool children. We examined the contribution of two factors to the reasoning ability of very young children: inhibitory capacity and the capacity to generate alternative ideas. In a first study, a total of 32 preschool children were all given generation, inhibition, and logical reasoning measures. Logical reasoning was measured using knowledge-based premises such as “All dogs have legs,” and two different inferences: modus ponens and affirmation of the consequent. Results revealed that correctly reasoning with both inferences is not related to the measure of inhibition, but is rather related to the capacity to generate alternative ideas. In a second study, 32 preschool children were given either the generation or the inhibition task before the logical reasoning measure. Results showed that receiving the generation task beforehand significantly improved logical reasoning compared to the inhibition task given beforehand. Overall, these results provide evidence for the greater importance of idea generation in the early development of logical reasoning.     

Power and affordances: when the situation has more power over powerful than powerless individuals

Six studies examined how power affects responses to situational affordances. Participants were assigned to a powerful or a powerless condition and were exposed to various situations that afford different classes of behavior. Study 1 examined behavior intentions for weekdays and weekends. Studies 2 and 3 focused on responses to imaginary social and work situations. Study 4 examined planned behavior for winter and summer days. Finally, Studies 5 and 6 examined behavior and attention in the presence of situation-relevant and irrelevant information. Consistently across these studies, powerful individuals acted more in situation-consistent ways, and less in situation-inconsistent ways, compared with powerless individuals. These findings are interpreted as a result of the greater tendency for powerful individuals to process information selectively in line with the primary factors that drive cognition, such as affordances. One consequence of these findings is that powerful individuals change behavior across situations more than powerless individuals.     

Pronorm and antinorm deviants: a test of the subjective group dynamics model

The authors replicated the study by D. Abrams, J. M. Marques, N. Bown, and M. Henson (2000, Study 2), performed to test the subjective group dynamics model (J. M. Marques, D. Abrams, D. Paez, & C. Martinez-Taboada, 1998). Participants were students enrolled in the psychology department at an Italian university. The present study considered the relationship between students and professors, and the attitude object was limited enrollment for admission to the department. Participants evaluated either in-group or out-group members. Findings replicated those of Abrams et al., except the in-group pronorm deviant was perceived to be less typical and evaluated less positively than the normative members. This finding suggests that, during an intergroup conflict, perception of the typicality of deviants exaggerating the in-group norms--and thus their evaluations--may increase as long as deviance is not perceived to be too accentuated.     

Something more than the 'Something more than interpretation' is needed: A comment on the paper by the Process of Change Study Group

A critique is offered of the paper on non-interpretive mechanisms in psychoanalytic therapy by the Process of Change Study Group (Stern et al., 1998a). The attention paid to procedural learning and to the need to attend to implicit relational knowledge is welcomed but a number of the group's assumptions are questioned. In particular, it is argued that the differences between mother-infant and therapist-patient relationships are inadequately considered, that the polarisation of non-symbolic and verbal memory is unhelpful and that the separation of the therapy relationship into three strands is problematic. The assumption that pursuing the goal of intersubjective understanding is in itself therapeutic is questioned. It is suggested that the recognition of the importance of implicit relational knowledge calls for a wider reappraisal of important aspects of theory and practice and that direct means of making such knowledge explicit should be considered.