From movements to actions: two mechanisms for learning action sequences

When other individuals move, we interpret their movements as discrete, hierarchically-organized, goal-directed actions. However, the mechanisms that integrate visible movement features into actions are poorly understood. Here, we consider two sequence learning mechanisms – transitional probability-based (TP) and position-based encoding computations – that have been studied extensively in the domain of language learning, and investigate their potential for integrating movements into actions. If these learning mechanisms integrate movements into actions, then they should create memory units that contain (i) movement information, (ii) information about the order in which movements occurred, and (iii) information allowing actions to be recognized from different viewpoints. We show that both mechanisms retain movement information. However, only the position-based mechanism creates movement representations that are view-invariant and contain order information. The TP-based mechanism creates movement representations that are view-dependent and contain no order information. We therefore suggest that the TP-based mechanism is unlikely to play an important role for integrating movements into actions. In contrast, the position-based mechanism retains some of the types of information needed to represent goal-directed actions, which makes it an attractive target for further research to explore what, if any, role it plays in the perception of goal-directed actions.     

“I'm Not Prejudiced,but . . .”: Compensatory Egalitarianism in the 2008 Democratic Presidential Primary

The historic 2008 Democratic presidential primary race between Barack Obama and Hillary Clinton posed a difficult choice for egalitarian White voters, and many commentators speculated that the election outcome would reflect pitting the effects of racism against sexism ( Steinem, 2008 ). Because self‐reported prejudices may be untrustworthy, we used the Implicit Association Test (IAT) to assess White adults’ (1) condemnation of prejudices, and (2) attitudes toward the candidates in relation to voting decisions, as part of an online survey. Results supported the proposed compensatory egalitarianism process, such that Whites’ voting choice was consistent with their implicit candidate preference, but in an effort to remain egalitarian, participants compensated for this preference by automatically condemning prejudice toward the other candidate's group. Additional findings showed that this process was moderated by participants’ ethnicity and level of prejudice, as expected. Specifically, compensatory egalitarianism occurred primarily among Whites and individuals low in explicit prejudice. Implications for candidate support, aversive racism theory, and implicit compensation processes are discussed.     

Self-denial and the role of intentions in the attribution of agency

The ability to distinguish between our own actions and those of an external agent is a fundamental component of normal human social interaction. Both low- and high-level mechanisms are thought to contribute to the sense of movement agency, but the contribution of each is yet to be fully understood. By applying small and incremental perturbations to realistic visual feedback of the limb, the influence of high-level action intentions and low-level motor predictive mechanisms were dissociated in two experiments. In the first, participants were induced to claim agency over movements that were subject to large perturbations and to deny agency over self-produced unperturbed movements despite the application of motor corrections by low-level mechanisms. A control experiment confirmed that if reaches met with their intended goal then they were more likely to be attributed to the agent, regardless of the discrepancy between the actual and seen positions of the limb.     

Zero tolerance for pragmatics

The proposition expressed by a sentence is relative to a context. But what determines the content of the context? Many theorists would include among these determinants aspects of the speaker’s intention in speaking. My thesis is that, on the contrary, the determinants of the context never include the speaker’s intention. My argument for this thesis turns on a consideration of the role that the concept of proposition expressed in context is supposed to play in a theory of linguistic communication. To illustrate an alternative approach, I present an original theory of the reference of demonstratives according to which the referent of a demonstrative is the object that adequately and best satisfies certain accessibility criteria. Although I call my thesis zero tolerance for pragmatics, it is not an expression of intolerance for everything that might be called “pragmatics.”     

Intentions and interactive transformations of decision problems

In this paper I study two ways of transforming decision problems on the basis of previously adopted intentions, ruling out incompatible options and imposing a standard of relevance, with a particular focus on situations of strategic interaction. I show that in such situations problems arise which do not appear in the single-agent case, namely that transformation of decision problems can leave the agents with no option compatible with what they intend. I characterize conditions on the agents’ intentions which avoid such problematic scenarios, in a way that requires each agent to take account of the intentions of others.     

Intentions vs. resemblance: Understanding pictures in typical development and autism

Research has debated whether children reflect on artists’ intentions when comprehending pictures, or instead derive meaning entirely from resemblance. We explore these hypotheses by comparing how typically developing toddlers and low-functioning children with autism (a population impaired in intentional reasoning) interpret abstract pictures. In Experiment 1, both groups mapped familiar object names onto abstract pictures, however, they related the same representations to different 3-D referents. Toddlers linked abstract pictures with intended referents they did not resemble, while children with autism mapped picture-referent relations based on resemblance. Experiment 2 showed that toddlers do not rely upon linguistic cues to determine intended referential relations. Experiment 3 confirmed that the responding of children with autism was not due to perseveration or associative word learning, and also provided independent evidence of their intention-reading difficulties. We argue that typically developing children derive meaning from the social-communicative intentions underlying pictures when resemblance is an inadequate cue to meaning. By contrast, children with autism do not reflect on artists’ intentions and simply relate pictures to whatever they happen to resemble.     

The relationship between the entrepreneurial personality and the Big Five personality traits

Although meta-analyses show that the Big Five personality traits predict business intention, creation, and success (Brandstätter, 2011), they also indicate that narrow personality traits, such as innovativeness, predict these outcomes better than broad traits, such as Conscientiousness and Extraversion (Rauch & Frese, 2007). The current study extends previous research to examine the relationship between the Big Five and a wider range of entrepreneurial outcomes (e.g. founding charitable organisations, organising events, and changing organisational practices). Additionally, it establishes the incremental validity of a narrow measure of entrepreneurial personality over the Big Five (META, Ahmetoglu, Leutner, & Chamorro-Premuic, 2011). Both the Big Five and META significantly predict various forms of entrepreneurial success, though META does so more consistently. This suggests that narrow personality traits have incremental validity in predicting entrepreneurial success vis-à-vis the Big Five. Theoretical and applied implications are discussed.     

From intentions via planning and behavior to physical exercise habits

ObjectivesIndividuals who enact a health behavior effortlessly with minimal conscious deliberation can be assumed to have formed a healthy habit. This can be reflected by increases in self-reported habit strength of a behavior. We examined whether physical exercise intentions facilitate changes in exercise habit strength by increasing the use of action planning and exercise.DesignTwo field studies investigated the effect of behavioral intentions on changes in habit strength through a sequential path from action planning to exercise.MethodExercise intentions, action planning, habit strength, and exercise were assessed at two measurement points in time in 231 university students (Study 1), and at four points in time in 134 rehabilitation patients (Study 2).ResultsIn multiple-step mediation models in both samples, there were indirect effects of intentions on habit strength through action planning and behavior.ConclusionAction planning and behavior operated as sequential mediators to bridge the gap between intentions and habit strength. Exercise habit strength may increase as a result of conscious action planning and frequent behavior enactment. Including these constructs jointly into behavior change models may improve the understanding of the mechanisms involved in behavior maintenance.     

Felt and behavioral engagement in workgroups of professionals

This research proposes a two-dimensional measure of engagement for professionals in technically-oriented workgroups. It examines the relationship of their engagement to five workgroup outcomes: innovation, performance, satisfaction with the organization, career success, and intentions to stay. Three studies are reported involving: (1) a random sample of 123 workgroups and 1351 self and reports by others of professionals employed by a Fortune 100 company, (2) a panel study of 1024 of the study one professionals four months later, and (3) the replication of results with 827 professionals across three cultures. The results support felt engagement and behavioral engagement as distinct constructs that can be measured by both a self-report and assessments by others of workgroup engagement. The relationship of engagement to workgroup innovation, performance, satisfaction with the organization, career success, and intentions to stay generalized across four countries and cultures: U.S./North America, The Netherlands/Europe, Argentina, and India. Felt engagement was the best predictor of affective outcomes and intentions to stay when all variables were measured concurrently. Behavioral engagement was the best predictor of workgroup performance concurrently and over time. This research indicates that the two dimensions of engagement are important aspects of vocational adjustment for the success of professionals in technically-oriented workgroups. Implications for future research are to consider multiple dimensions of engagement, clearly define the population and setting for engagement, and to study engagement as a dynamic experience that warrants ongoing management and workgroup attention.     

Assessing driver acceptance of Intelligent Transport Systems in the context of railway level crossings

Intelligent Transport Systems (ITS) have the potential to substantially reduce the number of crashes caused by human errors at railway levels crossings. Such systems, however, will only exert an influence on driving behaviour if they are accepted by the driver. This study aimed at assessing driver acceptance of different ITS interventions designed to enhance driver behaviour at railway crossings. Fifty-eight participants, divided into three groups, took part in a driving simulator study in which three ITS devices were tested: an in-vehicle visual ITS, an in-vehicle audio ITS, and an on-road valet system. Driver acceptance of each ITS intervention was assessed in a questionnaire guided by the Technology Acceptance Model and the Theory of Planned Behaviour. Overall, results indicated that the strongest intentions to use the ITS devices belonged to participants exposed to the road-based valet system at passive crossings. The utility of both models in explaining drivers’ intention to use the systems is discussed, with results showing greater support for the Theory of Planned Behaviour. Directions for future studies, along with strategies that target attitudes and subjective norms to increase drivers’ behavioural intentions, are also discussed.