Implicit body representations and the conscious body image

Recent studies have revealed that somatosensory processing relies on a class of implicit body representations showing large distortions of size and shape. The relation between these representations and the conscious body image remains unclear. Dissociations have been reported in the clinical literature on eating disorders between different body image measures, with larger and more consistent distortions found with depictive measures, in which participants compare their body to a visual depiction of a body, than metric measures, in which participants compare their body to some non-body standard. Here, we compared implicit body representations underlying position sense to the body image measured with both depictive and metric methods. The body image was measured using both a depictive method (template matching) in which participants judged whether their hand was wider or more slender than a shown hand picture, and a metric method (line length) in which participants judged whether different parts of their hand were shorter or longer than a presented line. Consistent with previous findings, characteristic distortions were found for the implicit body representation underlying position sense. These distortions were also found in attenuated form for metric - but not depictive - body image measures. While replicating the basic dissociation between implicit body representations and the conscious body image, these results demonstrate that this dissociation is not absolute and specific tasks may utilise both to varying degrees depending on task demands. Metric measures may not be pure measures of body image, but some combination of visual and somatosensory body representations.     

Implicit learning shapes new conscious percepts and representations

We present here the lineaments of a new account of implicit learning, an account that does not rely on the notion of “implicit knowledge.” In this account, improved performance depends on the action of unconscious mechanisms that structure the phenomenal, conscious experience of the world. This integrative view makes groundless the search for dissociations between conscious and unconscious influences that has been at the core of the research on implicit learning and memory. We contrast this view, on the one hand, to Dienes and Berry’s (1997) proposal, which defines implicit learning by analogy with subliminal perception, and, on the other, to Neal and Hesketh’s (1997) episodic account, in which subjective experience is a starting point for inquiry, rather than the phenomenon requiring explanation.     

Implicit and explicit spatial-numerical representations diverge in number-form synesthetes

In number-form (NF) synesthesia—a condition in which people report vivid, automatic and consistent mental layouts for numerical sequences—numbers and space are closely linked. These explicit associations are similar to the implicit associations demonstrated by the Spatial-Numerical Association of Response Codes (SNARC) effect. Thus, NF synesthesia offers a unique opportunity to investigate spatial-numerical associations. We tested implicit and explicit representations in NF synesthetes using a multiple case-study design. Over two sessions, synesthetes participated in a semi-structured interview focusing on the nature of their associations, as well as SNARC and number line estimation tasks. Contrary to our hypotheses, only one synesthete demonstrated SNARC effects congruent with her reported form, whereas two others exhibited SNARC effects that were the opposite of their explicit NFs. While this inconsistency between implicit and explicit representations may indicate separate underlying cognitive mechanisms, factors such as task-specific constraints and strategic variability must also be considered.     

Implicit self- and other-associations in obsessive-compulsive personality disorder traits

This study investigated automatic associations with the self and with others in the context of obsessive-compulsive personality disorder (OCPD). Participants scoring high (n=20) or low (n=20) on DSM-IV OCPD traits performed three irrelevant-feature tasks in which language of the words (Dutch vs. English) was the relevant stimulus feature and word content (OCPD self-view, OCPD other-view, high self-esteem and low self-esteem) the irrelevant feature. Results showed that the high and low OCPD group differed with respect to both explicit and implicit OCPD cognitions. Typically, high OCPD participants showed better performance on OCPD-congruent trials than on OCPD-incongruent trials, whereas low OCPD participants displayed the opposite pattern. This was evident from a semantic Simon effect and from a semantic priming effect. Correlations between direct and indirect measures of OCPD beliefs and of self-esteem were low. Moreover, the indirect OCPD measures contributed uniquely and independently of explicit beliefs to the prediction of OCPD.     

Embodied numerosity: Implicit hand-based representations influence symbolic number processing across cultures

In recent years, a strong functional relationship between finger counting and number processing has been suggested. Developmental studies have shown specific effects of the structure of the individual finger counting system on arithmetic abilities. Moreover, the orientation of the mental quantity representation (“number line”) seems to be influenced by finger counting habits. However, it is unclear whether the structure of finger counting systems still influences symbolic number processing in educated adults.In the present transcultural study, we pursued this question by examining finger-based sub-base-five effects in an Arabic number comparison task with three different groups of participants (German deaf signers, German and Chinese hearing adults). We observed sub-base-five effects in all groups, but particularly so for both German groups who use an explicit sub-base-five system in their finger counting habits. It is concluded that bodily experiences – namely finger counting – influence the structure of the abstract mental number representations even in adults. Thus, the present findings support the general idea that even seemingly abstract cognition may at least partially be rooted in our bodily experiences.     

Implicit and explicit personality: a test of a channeling hypothesis for aggressive behavior

D. G. Winter, O. P. John, A. J. Stewart, E. C. Klohnen, and L. E. Duncan (1998) proposed that self-beliefs about personality influence the channels through which people express their implicit motives. On the basis of this hypothesis, the authors predicted that self-beliefs about aggressiveness would influence the channel(s) through which people express their aggressive motive and the justification mechanisms they use to defend expression of this motive. For example, the authors predicted that people who were implicitly prepared to rationalize a desire to harm others would engage in (a) overt aggression if they viewed themselves as aggressive or (b) passive aggression if they viewed themselves as nonaggressive. The implicit aspects of aggressiveness were measured via conditional reasoning (L. R. James et al., 2005). Results based on intramural basketball players supported the channeling hypothesis.     

Malevolent object representations in borderline personality disorder and major depression.

To study malevolent representations, earliest memories were reliably coded on scales of affect tone. Ss were diagnosed with borderline personality disorder: 31 without and 30 with concurrent major depression. Nonborderline comparison subjects had either major depressive disorder (n = 26) or no psychiatric diagnosis (n = 30). Borderline subjects were discriminated from comparison subjects by their more malevolent representations; they more frequently produced memories involving deliberate injury; and they portrayed potential helpers as less helpful. Results suggest the diagnostic significance of malevolent representations, which need to be explained by any theory of borderline personality disorder.     

Implicit and explicit learning of event sequences: evidence for distinct coding of perceptual and motor representations

Event-related brain potentials (ERPs) of 21 subjects were recorded in a choice reaction time task with a repeating eight-element long stimulus sequence. The regular event sequence was sometimes interrupted by 'perceptual' or by 'motor deviants' which both replaced an expected stimulus but either preserved or violated the sequence of motor responses. Response times confirmed that all subjects had acquired some knowledge of the sequential dependencies. By means of a post-experimental free recall and recognition test, subjects were classified as having either explicit or implicit knowledge of the event sequence. The ERPs showed different effects for different types of stimuli and the two groups. In the group of explicit learners, a larger N200 component was evoked by both types of deviants and a larger P300 by motor deviants only. In the group of implicit learners these 'perceptual components' remained unaffected. In contrast, in both groups of subjects the lateralized readiness potential (LRP) which accompanied motor deviants revealed a partial activation of the to be expected but incorrect response, i.e. motor learning. These results suggest that explicit learners acquire knowledge about both, stimulus and response dependencies while implicit learners acquire knowledge about response dependencies only.     

Analysis of early representations and personality among victims of domestic violence

IntroductionThis exploratory study analyses the individual elements of the victims of domestic violence through life events, early dysfunctional representations and personality.ObjectivesThis research aims, firstly, to show the existence of early traumatic experiences for the victims of domestic violence. Secondly, it aims to measure the prevalence of early maladaptive schema and identify personality traits in these subjects. Finally, our aim is to highlight that depending on the violence carried out within the couple (reciprocal/unilateral), activated schemas and personality traits are different.MethodOur sample consists of 80 female subjects, non-abused women (n = 40) and victims of domestic violence (n = 40), of which 22 victims of unilateral violence and 18 victims of reciprocal violence. Participants filled out an initial questionnaire as well as the scales and self-report questionnaires as follows: Life events (Amiel-Lebigre, 1984); TCI (Cloninger et al., 1993); YSQ-S3 (Young et al., 2005). The data were subject to statistical analysis and were processed using the software SPSS 22.ResultsThe results show that the victims have experienced more early traumas than non-victims, that schemas (emotional deprivation, mistrust and abuse, subjugation, self-sacrifice) are more active. We note also different personality traits according to the different groups (victims/non-victims) and subgroups (reciprocal violence/unilateral violence).ConclusionOur study sheds light on the role of the individual elements of the victims on the perception of the relationship and on the process of engagement and disengagement of women in abusive relationships. Limits and expectations of the study are discussed.     

Implicit self-esteem in the context of trait models of personality

Although the basic dimensions of personality are strongly associated with individual differences in (explicit) self-esteem, the relations between personality and implicit self-esteem have not been systematically researched. In three studies, implicit self-evaluations (measured both with the Name-Letter Test and the self-esteem IAT) were generally independent of personality self-reports (Studies 1–3) and peer-reports (Study 3). Moreover, the implicit measures were also independent of one another. Discussion centers on the problems and promises of implicit measures as indicators of individual differences in self-esteem and their relation to personality.     

If I imagine it,then it happened: The Implicit Truth Value of imaginary representations

Imagination sometimes leads people to behave, feel, and think as though imagined events were real even when they know they were not. In this paper, we suggest that some understanding of these phenomena can be achieved by differentiating between Implicit Truth Value (ITV), a spontaneous truth evaluation, and Explicit Truth Value (ETV), a self-reported truth judgment. In three experiments, we measure ITV using the autobiographical Implicit Association Test (Sartori, Agosta, Zogmaister, Ferrara, & Castiello, 2008), which has been used to assess which of two autobiographical events is true. Our findings demonstrate that imagining an event, like experiencing an event, increases its ITV, even when people explicitly acknowledge the imagined event as false (Experiments 1a and 1b). Furthermore, we show that imagined representations generated from a first-person perspective have higher ITV than imagined representations generated from a third-person perspective (Experiment 2). Our findings suggest that implicit and explicit measures of truth differ in their sensitivity to properties underlying truth judgment. We discuss the contribution of characterizing events according to both ITV and ETV to the understanding of various psychological phenomena, such as lying and self-deception.     

Perceiving others is so simple: Implicit simplicity of personality perceptions in a dyadic design

People judge others on simplified trait structures when evaluating the Big Five, which is referred to as implicit simplicity (IS: Beer & Watson, 2008). The present study investigated IS in minimally acquainted informal dyads. Hundred and eighty-six participants interacted for a short time on a task, and then provided self- and peer-ratings on the IASR-B5 (Trapnell & Wiggins, 1990). IS manifested in a global evaluative “halo-factor” with some accuracy and was related to perceivers’ interpersonal attraction ratings and personality traits. The driving forces behind IS are discussed.     

Implicit policies about relations between personality traits and behavioral effectiveness in situational judgment items

This paper develops the concept of implicit trait policy (ITP), which is a variant of the accentuation effect described by Tajfel (1957). ITPs are implicit beliefs about causal relations between personality traits and behavioral effectiveness. Studies reported here tested the hypotheses (a) that personality traits affect ITPs so that agreeable people, for instance, believe the relation between agreeableness and effectiveness is more strongly positive than disagreeable people do and (b) that ITPs can predict behavior that expresses associated personality traits. Two studies with undergraduate research participants supported the first hypothesis for traits of agreeableness and extraversion (the average correlation between traits and associated ITPs was .31 for agreeableness and .37 for extraversion) but not for conscientiousness. A 3rd study with student participants found that individual differences in ITPs for agreeableness predicted agreeable behavior (the average correlation was .33) in simulated work settings. These results suggest that ITPs may be useful for predicting work behavior that expresses personality traits even though ITPs may not be strongly correlated with the personality traits themselves.