The dynamics of perception and action

How might one account for the organization in behavior without attributing it to an internal control structure? The present article develops a theoretical framework called behavioral dynamics that integrates an information-based approach to perception with a dynamical systems approach to action. For a given task, the agent and its environment are treated as a pair of dynamical systems that are coupled mechanically and informationally. Their interactions give rise to the behavioral dynamics, a vector field with attractors that correspond to stable task solutions, repellers that correspond to avoided states, and bifurcations that correspond to behavioral transitions. The framework is used to develop theories of several tasks in which a human agent interacts with the physical environment, including bouncing a ball on a racquet, balancing an object, braking a vehicle, and guiding locomotion. Stable, adaptive behavior emerges from the dynamics of the interaction between a structured environment and an agent with simple control laws, under physical and informational constraints.     

Cognitive Correlates of Social Phobia Among Children and Adolescents

We examined different cognitive phenomena in relation to social phobia among children (aged 7 to 11) and adolescents (aged 12–16) separately. Fifty socially phobic youths were compared to 30 normal control children on measures of social anxiety, social expectation as well as self- and observer-rated performance during two social tasks involving a same-aged peer. Additionally, a video-mediated recall procedure was conducted immediately following the two behavioral tasks to examine specific types of self-talk. Results indicated that socially phobic youths had lower expectations of their performance and rated their actual performance worse than controls during a social interaction task, but not a read-aloud task. Self-ratings of decreased performance among socially phobic youths were corroborated by blind observers. Although differences in specific types of self-talk were found between the two groups, these findings were generally moderated by age. Furthermore, certain cognitive symptoms associated with the disorder were more commonly found among older socially phobic youths. The current findings highlight the importance of considering developmental factors in the presentation and treatment of social phobia in youths.     

Strategy-dependent changes in memory: Effects on behavior and brain activity

In the present study, an implicit strategy manipulation was used to explore the contribution of memory strategy to brain activation and behavioral performance. Participants were biased to use either a short-term (maintenance-focused) or long-term (retrieval-focused) memory strategy within a single memory task through manipulation of task context. In comparing directly matched trials across the different task contexts, we observed clear changes in both behavioral performance and brain activity across a network of regions located primarily within lateral and medial frontal cortex. These effects of the memory strategy manipulation suggest that when a retrieval-focused strategy is induced, mnemonic processes are preferentially engaged during the encoding period. In contrast, when a maintenance-focused strategy is induced, mnemonic processes are preferentially engaged during the delay and response periods. Taken together, the results imply that covert cognitive strategies play an important role in modulating brain activation and behavior during memory tasks.     

How Collective Participation Impacts Social Identity: A Longitudinal Study from India

A key issue for political psychology concerns the processes whereby people come to invest psychologically in socially and politically significant group identities. Since Durkheim, it has been assumed that participation in group‐relevant collective events increases one's investment in such group identities. However, little empirical research explicitly addresses this or the processes involved. We investigated these issues in a longitudinal questionnaire study conducted at one of the world's largest collective events—a month‐long Hindu festival in north India (the Magh Mela). Data gathered from pilgrims and comparable others who did not attend the event show that one month after the event, those who had participated (but not the controls) exhibited heightened social identification as a Hindu and increased frequency of prayer rituals. Data gathered from pilgrims during the festival predicted these outcomes. Specifically, perceptions of sharing a common identity with other pilgrims and of being able to enact one's social identity in this event helped predict changes in participants' identification and behavior. The wider significance of these data for political psychology is discussed.     

Adolescent Narcissism,Aggression, and Prosocial Behavior: The Relevance of Socially Desirable Responding

An important threat to validity in personality research pertains to an individual's motivation to respond in a socially desirable manner on self-report inventories. This issue was examined in this study in the context of narcissism, aggression, and prosocial behavior in a sample of at-risk adolescents. Participants were 161 adolescents (128 males, 29 females, 4 not reported) ranging in age from 16 to 19 years who were attending a residential program for youth who have dropped out of school. Overall, socially desirable response tendencies were negatively correlated with vulnerable narcissism and self-reported aggression. Moreover, low socially desirable responses strengthened the relation between narcissism and self-reported aggression. Socially desirable responding was not associated with self- or peer-reported prosocial behavior and did not moderate the relation between narcissism and prosocial behavior. These findings indicate that the relation between narcissism and aggression is attenuated by concerns with social desirability. However, further work is needed in broader samples of adolescents to more closely examine whether social desirability concerns actually mitigate aggression among some youth or signify underreporting of one's problem behaviors.     

Does the human motor system simulate Pinocchio's actions? Coacting with a human hand versus a wooden hand in a dyadic interaction

Corepresenting actions performed by conspecifics is essential to understanding their goals, inferring their mental states, and cooperating with them. It has recently been demonstrated that joint-action effects in a Simon task provide a good index for corepresentation. In the present study, we investigated whether corepresentation is restricted to biological agents or also occurs for nonbiological events. Participants performed a Simon task either with an image of a human hand or with a wooden analogue. The Simon-like effect emerged only when participants coacted with a biological agent. The lack of the joint-action effect when participants interacted with a wooden hand indicates that the human corepresentation system is biologically tuned.     

Neural correlates of infant action processing relate to theory of mind in early childhood

The mechanisms that support infant action processing are thought to be involved in the development of later social cognition. While a growing body of research demonstrates longitudinal links between action processing and explicit theory of mind (TOM), it remains unclear why this link emerges in some measures of action encoding and not others. In this paper, we recruit neural measures as a unique lens into which aspects of human infant action processing (i.e., action encoding and action execution; age 7 months) are related to preschool TOM (age 3 years; n = 31). We test whether individual differences in recruiting the sensorimotor system or attention processes during action encoding predict individual differences in TOM. Results indicate that reduced occipital alpha during action encoding predicts TOM at age 3. This finding converges with behavioral work and suggests that attentional processes involved in action encoding may support TOM. We also test whether neural processing during action execution draws on the proto‐substrates of effortful control (EC). Results indicate that frontal alpha oscillatory activity during action execution predicted EC at age 3—providing strong novel evidence that infant brain activity is longitudinally linked to EC. Further, we demonstrate that EC mediates the link between the frontal alpha response and TOM. This indirect effect is specific in terms of direction, neural response, and behavior. Together, these findings converge with behavioral research and demonstrate that domain general processes show strong links to early infant action processing and TOM.     

Isolation rearing effects on probabilistic learning and cognitive flexibility in rats

Isolation rearing is a neurodevelopmental manipulation that produces neurochemical, structural, and behavioral alterations in rodents that in many ways are consistent with schizophrenia. Symptoms induced by isolation rearing that mirror clinically relevant aspects of schizophrenia, such as cognitive deficits, open up the possibility of testing putative therapeutics in isolation-reared animals prior to clinical development. We investigated what effect isolation rearing would have on cognitive flexibility, a cognitive function characteristically disrupted in schizophrenia. For this purpose, we assessed cognitive flexibility using between- and within-session probabilistic reversal-learning tasks based on clinical tests. Isolation-reared rats required more sessions, though not more task trials, to acquire criterion performance in the reversal phase of the task, and were slower to adjust their task strategy after reward contingencies were switched. Isolation-reared rats also completed fewer trials and exhibited lower levels of overall activity in the probabilistic reversal-learning task than did the socially reared rats. This finding contrasted with the elevated levels of unconditioned investigatory activity and reduced levels of locomotor habituation that isolation-reared rats displayed in the behavioral pattern monitor. Finally, isolation-reared rats also exhibited sensorimotor gating deficits, reflected by decreased prepulse inhibition of the startle response, consistent with previous studies. We concluded that isolation rearing constitutes a valuable, noninvasive manipulation for modeling schizophrenia-like cognitive deficits and assessing putative therapeutics.     

Are Telecommuters Remotely Good Citizens? Unpacking Telecommuting's Effects on Performance Via I‐Deals and Job Resources

Despite their widespread adoption, concerns remain that virtual work arrangements can harm employee job performance and citizenship behavior. Does telecommuting really hamper these critical dimensions of employee effectiveness? To answer this question, we develop a theoretical framework linking telecommuting to task and contextual performance via a dual set of mechanisms—reflecting proposed effects of i‐deals and job resources. Further, we propose that the meaning of and outcomes from these paths depend on the social context surrounding telecommuting. We test the framework with field data from 323 employees and 143 matched supervisors across a variety of organizations. As predicted, we find that telecommuting is positively associated with task and contextual performance, directly and indirectly via perceived autonomy. These beneficial effects are contingent upon two aspects of the social context: leader‐member exchange and signals of its normative appropriateness among coworkers and one's supervisor.     

Predictive joint-action model: A hierarchical predictive approach to human cooperation

Research in a number of related fields has recently begun to focus on the perceptual, cognitive, and motor workings of cooperative behavior. There appears to be enough coherence in these efforts to refer to the study of the mechanisms underlying human cooperative behavior as the field of joint-action (Knoblich, Butterfill, & Sebanz, 2011; Sebanz, Bekkering, & Knoblich, 2006). Yet, the development of theory in this field has not kept pace with the proliferation of research findings. We propose a hierarchical predictive framework for the study of joint-action that we call the predictive joint-action model (PJAM). The presentation of this theoretical framework is organized into three sections. In the first section, we summarize hierarchical predictive principles and discuss their application to joint-action. In the second section, we juxtapose PJAM’s assumptions with empirical evidence from the current literature on joint-action. In the third section, we discuss the overall success of the hierarchical predictive approach to account for the burgeoning empirical literature on joint-action research. Finally, we consider the model’s capacity to generate novel and testable hypotheses about joint-action. This is done with the larger goal of uncovering the empirical and theoretical pieces that are still missing in a comprehensive understanding of joint action.     

The effects of “intrinsic” and “extrinsic” reinforcement contingencies on task behavior

In spite of a substantial number of observations to the contrary, some behavioral scientists have concluded that salient extrinsic reinforcers not only do not maintain or support task behavior, they decrease or extinguish it by somehow destroying or impairing “intrinsic motivation.” In this study it was once again demonstrated that when behavior is sustained in a task setting in the apparent absence of salient extrinsic reinforcers, quite subtle but nevertheless palpable response-produced stimulus changes are found to be involved. Moreover, when a signaled extrinsic monetary reinforcement contingency was applied, it not only did not impair the effects of the intrinsic reinforcers, it produced a significant increase in task performance during the time the extrinsic reinforcement contingency prevailed, and it did not produce a decrement in self-reports of task attractiveness nor in performance during a discretionary period in which the contingency had been deliberately withdrawn. We conclude that there is little reason to believe that the design and implementation of effective extrinsic reinforcement contingencies will destroy one's pride in one's work, the intrinsic worth or meaningfulness of the job, or one's “intrinsic motivation” to perform it.     

Narrative as a Resource for Feminist Practices of Socially Engaged Inquiry: Mayra Montero's In the Palm of Darkness

Against the view that the physical sciences should be the privileged source of reliable knowledge within the academy in general, and in philosophy in particular, this essay argues that an interdisciplinary approach to knowledge‐production, one that includes social and psychological assessment as well as narrative analysis, can better capture the diverse range of human epistemic activities as they occur in their natural settings. Postpositivist epistemologies, including Lorraine Code's social naturalism, Satya Mohanty's and Paula Moya's postpositivist literary and pedagogical projects, and Linda Alcoff's dialogical template for knowledge form the basis of a revised naturalized epistemology that is more accountable to a socially engaged inquiry. This revised naturalism shifts orientation from the idealized setting of the laboratory and its a priori conditions for knowledge to localized settings, where knowledge emerges out of diverse contextualized interpretations of the natural and social world that interlocutors produce as they dialogue with one another. Mayra Montero's neocolonial narrative thematizes the spatial shift of scientific activity, showing how epistemic authority, aligned with North American interests and regional identity, is established, withheld from others, and contested.     

Inhibitory control and set shifting describe different pathways from behavioral inhibition to socially anxious behavior

Individuals with a behaviorally inhibited (BI) temperament are more likely to develop social anxiety. However, the mechanisms by which socially anxious behavior emerges from BI are unclear. Variation in different forms of top‐down control, specifically executive functions (EF), may play distinct roles and characterize differential pathways to social anxiety. Here 291 children were assessed for BI in toddlerhood (ages 2 and 3), parent‐reported inhibitory control and set shifting during middle childhood (age 7), and multidimensional assessment of socially anxious behavior completed during late childhood and early adolescence (ages 9 and 12). Structural equation modeling revealed that early variation in BI predicted the development of socially anxious behavior through either higher levels of parent‐reported inhibitory control or lower levels of parent‐reported set shifting. These data reinforce the notion that top‐down control does not uniformly influence relations between temperament and socially anxious behavior. These data suggest novel approaches to thinking about the role of EFs and social anxiety outcomes as children approach adolescence.     

Post-event processing in social anxiety

Clark and Wells’ [1995. A cognitive model of social phobia. In: R. Heimberg, M. Liebowitz, D.A. Hope, & F.R. Schneier (Eds.) Social phobia: Diagnosis, assessment and treatment (pp. 69-93). New York: Guildford Press.] cognitive model of social phobia proposes that following a social event, individuals with social phobia will engage in post-event processing, during which they conduct a detailed review of the event. This study investigated the relationship between self-appraisals of performance and post-event processing in individuals high and low in social anxiety. Participants appraised their performance immediately after a conversation with an unknown individual and prior to an anticipated second conversation task 1 week later. The frequency and valence of post-event processing during the week following the conversation was also assessed. The study also explored differences in the metacognitive processes of high and low socially anxious participants. The high socially anxious group experienced more anxiety, predicted worse performance, underestimated their actual performance, and engaged in more post-event processing than low socially anxious participants. The degree of negative post-event processing was linked to the extent of social anxiety and negative appraisals of performance, both immediately after the conversation task and 1 week later. Differences were also observed in some metacognitive processes. The results are discussed in relation to current theory and previous research.     

Asian American-white American differences in expressions of social anxiety: a replication and extension

This study examined whether Asian American-White American differences on a trait measure of social anxiety extend to nonverbal behavior and to reports of anxiety-related emotions during a 3-min social performance task. Forty Asian Americans and 40 White Americans completed a trait measure of social anxiety and rated their emotions before, and immediately after, a social performance task. Their videotaped behavior was coded using microlevel behavioral codes (e.g., gaze avoidance, fidgeting). Results indicated that Asian Americans reported more anxiety than White Americans on the trait measure and on the emotion rating scales but that they did not differ substantially on microlevel behavioral indexes of social anxiety. Implications of ethnic variations in the patterns of anxious responding are discussed.     

Spatial Memory and Response Strategies in Rats: Age, Sex and Rearing Differences in Performance

Rats reared in social isolation made more errors on a spatial memory task and made errors earlier in each trial than socially reared rats. The difference in performance only occurred when rats were isolated prior to 50 days of age, and it survived IOO days of subsequent social housing. IOO days of isolation after 50 days of age did not influence performance on the spatial memory task. Subsequent experiments suggest that spatial abilities may not differ between groups but that isolates are slower to learn to make a particular response and to locate a particular arm when spatial and response cues are irrelevant. In contrast to previous experiments, clear response strategies were seen in the present experiments. These were prevalent in the young (54-days-old) rats, were less common at 90 days and had completely disappeared by 180 days. Response strategies were more common in male rats and in socially reared rats.     

Who is most likely to fat talk? A social comparison perspective

Negative talk about food, weight, or the body that occurs commonly among women – fat talk – is gaining increasing attention. Whereas its negative eating pathology and body esteem correlates have received continued empirical validation, what is not yet known is who is most likely to fat talk. We propose that social comparison processes underlie and motivate much of fat talk. In a sample of 143 college women, we found evidence for the role of social comparison. First, having a stronger tendency to socially compare directly predicts fat talk. Second, as a woman's body image concerns increase, her likelihood of engaging in fat talk increases, and this is intensified if she has a greater tendency to socially compare. Finally, social comparison propensity begins to exert its exacerbating effects at surprisingly low levels of body image concern. Results are discussed in terms of the advantages of using a social comparison perspective to better understand fat talk.     

Social anxiety and cognitive expectancy of aversive outcome in avoidance conditioning

Fear conditioning studies have shown that social anxiety is associated with enhanced expectancy of aversive outcome. However, the relation between cognitive expectancy and social anxiety has never been tested in avoidance conditioning paradigms. We compared 48 low (LSA) and high socially anxious individuals (HSA) on subjective expectancy of aversive outcome during an avoidance conditioning task. Displays of neutral faces were coupled with an aversive outcome (US): a shout and a shock. Participants could avoid the US by pressing a correct button from a button box. First, HSA showed higher US expectancy than LSA during the initial phase of avoidance conditioning, supporting the view that socially anxious individuals have an expectancy bias when social situations are ambiguous. Second, when the avoidance response became unavailable, LSA showed lower US expectancy than HSA, suggesting that low socially anxious individuals are prone to a positive bias when perceived threat is high. A lack of such positive bias in socially anxious individuals may lead to higher susceptibility to safety behavior interpretations. Together, these findings support the role of cognitive processes in avoidance conditioning and underscore the relevance to encounter avoidance learning when studying social anxiety.     

Toddlers' Learning From Socially Meaningful Video Characters

Toddlers' performance on a seriation sequencing task was measured after exposure to a video as a function of the social meaningfulness of the character. Forty eight 21-month-old toddlers were randomly assigned to a socially meaningful character video demonstration, a less socially meaningful character video demonstration, or a no exposure control group. Results indicated that toddlers learned the seriation sequencing task better from a video when a socially meaningful character, rather than a less socially meaningful character, demonstrated the task. Our findings demonstrate that toddlers under age two can learn cognitive, logical reasoning skills from a video presentation when the onscreen character is socially meaningful to them.