Deep cognitive activation: a new approach to the unconscious

Effects of Mortality Salience on Physiological Arousal

Making the inevitability of mortality salient makes people more defensive about their self-esteem and worldviews. Theoretical arguments and empirical evidence point to a mediating role of arousal in this defensive process, but evidence from physiological measurement studies is scarce and inconclusive. The present study seeks to draw a comprehensive picture of how physiological arousal develops over time in the mortality salience (MS) paradigm, and whether contemplating one's mortality actually elicits more physiological arousal than reflecting on a death-unrelated aversive control topic. In a between-subjects design, participants were asked two open questions about their mortality or about dental pain. Cardiac, respiratory, and electrodermal indicators of arousal were measured both as participants provided written answers to the questions, and during a series of resting intervals surrounding the questions. A Bayes factor analysis indicated support for the hypothesis that the MS paradigm increases physiological arousal, both while answering the two open-ended questions and afterward. Regarding the MS versus dental pain comparison, the null hypothesis of no difference was supported for most analysis segments and signals. The results indicate that the arousal elicited by MS is not different from that elicited by dental pain salience. This speaks against the idea that worldview defense following MS occurs because MS produces higher physiological arousal. Of course, this finding does not rule the importance of other forms of arousal (i.e., subjective arousal) for MS effects.

Reconsidering unconscious persistence: Suppressing unwanted memories reduces their indirect expression in later thoughts

When we seek to forget unwelcome memories, does the suppressed content still exert an unconscious influence on our thoughts? Although intentionally stopping retrieval of a memory reduces later episodic retention for the suppressed trace, it remains unclear the extent to which suppressed content persists in indirectly influencing mental processes. Here we tested whether inhibitory control processes underlying retrieval suppression alter the influence of a memory's underlying semantic content on later thought. To achieve this, across two experiments, we tested whether suppressing episodic retrieval of to-be-excluded memories reduced the indirect expression of the unwanted content on an apparently unrelated test of problem solving: the remote associates test (RAT). Experiment 1 found that suppressed content was less likely than unsuppressed content to emerge as solutions to RAT problems. Indeed, suppression abolished evidence of conceptual priming, even when participants reported no awareness of the relationship between the memory and the problem solving tasks. Experiment 2 replicated this effect and also found that directing participants to use explicit memory to solve RAT problems eliminated suppression effects. Experiment 2 thus rules out the possibility that suppression effects reflect contamination by covert explicit retrieval strategies. Together, our results indicate that inhibitory control processes underlying retrieval suppression not only disrupt episodic retention, but also reduce the indirect influence of suppressed semantic content during unrelated thought processes. Considered with other recent demonstrations of implicit suppression effects, these findings indicate that historical assumptions about the persisting influence of suppressed thoughts on mental health require closer empirical scrutiny and need to be reconsidered.

The Effect of Ostracism on the Accessibility of Uncertainty-Related Thoughts

Introduction

Humans have a need to belong a group to survive. For this reason, people have enhanced cognitive abilities to detect cues about rejection. Thus, rejection from our group is a threatening situation like feeling personal uncertainty. According to Temporal Need Threat Model, ostracism may lead to personal uncertainty and situational ambiguity. Since being ostracized threatens people's need to understand their world, and to control how they should behave, it confronts people with personal uncertainty. According to our knowledge, there is no experiment providing a direct empirical evidence of this proposition about the role of uncertainty in ostracism. Thus, the goal of the present study was to assess the accessibility of uncertainty-related thoughts following ostracism manipulation.

Methods

In order to manipulate ostracism, participants played a Cyberball game. Besides, they executed a distracter task either before or after the game depending on the experiment condition they are in. Then, all participants completed the lexical decision task, which was used to measure the accessibility of uncertainty-related thoughts.

Results

The results of this study revealed that ostracized participants reacted faster to uncertainty-related words than to abstract ones. As expected, we did not find any significant difference between uncertainty-related and abstract response latencies in the inclusion condition.

Conclusion

Based on these results we might conclude that being ostracized leads to an increase in uncertainty accessibility. If this interpretation is correct, this would suggest that our findings provide an empirical support for the proposition by temporal need threat model that uncertainty concerns may be a key antecedent of reactions to being ostracized.

The relationship between thought suppression and retrieval-induced forgetting: an analysis of witness memories

The aim of the present research was to examine the relationship between individual differences in thought suppression and retrieval-induced forgetting (RIF) in witness-like situations. We predicted that people who are more prone to suppress undesired thoughts and memories would demonstrate a stronger RIF effect. Consistent with findings obtained in a US sample (Blumberg in Personal Individ Differ 29:943-950, 2000), results of a preliminary study (Study 1) confirmed the three-factor structure of the white bear suppression inventory (WBSI): the tendency to rely on thought suppression (suppression dimension), the frequency of experiencing intrusive thoughts (intrusion dimension), and the frequency of using self-distraction to avoid undesired thoughts (self-distraction dimension). Consistent with our hypotheses, Study 2 found that only the suppression sub-dimension of the WBSI was positively and significantly related to RIF. Theoretical expectations of these findings and implications for witness research are discussed.

Mind the gap: an attempt to bridge computational and neuroscientific approaches to study creativity

Creativity is the hallmark of human cognition and is behind every innovation, scientific discovery, piece of music, artwork, and idea that have shaped our lives, from ancient times till today. Yet scientific understanding of creative processes is quite limited, mostly due to the traditional belief that considers creativity as a mysterious puzzle, a paradox, defying empirical enquiry. Recently, there has been an increasing interest in revealing the neural correlates of human creativity. Though many of these studies, pioneering in nature, help demystification of creativity, but the field is still dominated by popular beliefs in associating creativity with “right brain thinking”, “divergent thinking”, “altered states” and so on (Dietrich and Kanso, 2010). In this article, we discuss a computational framework for creativity based on Baars’ Global Workspace Theory (GWT; Baars, 1988) enhanced with mechanisms based on information theory. Next we propose a neurocognitive architecture of creativity with a strong focus on various facets (i.e., unconscious thought theory, mind wandering, spontaneous brain states) of un/pre-conscious brain responses. Our principal argument is that pre-conscious creativity happens prior to conscious creativity and the proposed computational model may provide a mechanism by which this transition is managed. This integrative approach, albeit unconventional, will hopefully stimulate future neuroscientific studies of the inscrutable phenomenon of creativity.

Creativity-the unconscious foundations of the incubation period

Creativity is one of the most important assets we have to navigate through the fast changing world of the 21st century. Anecdotal accounts of creative individuals suggest that oftentimes, creative discoveries result from a process whereby initial conscious thought is followed by a period during which one refrains from task-related conscious thought. For example, one may spend an embarrassing amount of time thinking about a problem when the solution suddenly pops into consciousness while taking a shower. Not only creative individuals but also traditional theories of creativity have put a lot of emphasis on this incubation stage in creative thinking. The aim of the present article is twofold. First, an overview of the domain of incubation and creativity is provided by reviewing and discussing studies on incubation, mind-wandering, and sleep. Second, the causes of incubation effects are discussed. Previously, little attention has been paid to the causes of incubation effects and most findings do not really speak to whether the effects should be explained by unconscious processes or merely by consequences of a period of distraction. In the latter case, there is no need to assume active unconscious processes. The findings discussed in the current article support the idea that it is not merely the absence of conscious thought that drives incubation effects, but that during an incubation period unconscious processes contribute to creative thinking. Finally, practical implications and directions for future research will be discussed.

Very low birthweight: dysregulated gestation versus evolutionary adaptation

Much medical literature attributes persistently high rates of very low birthweight (VLBW) to "dysregulated" gestation. We offer the alternative view that natural selection conserved well-regulated, though nonconscious, decisional biology that protects the reproductive fitness of women by spontaneously aborting gestations that would otherwise yield frail infants, particularly small males. Modern obstetric practice, however, converts some fraction of these erstwhile spontaneous abortions into live births of very small infants. We further propose that the nonconscious decisional biology of gestation exhibits preferences also seen in consciously made decisions. We hypothesize that the incidence of VLBW among male infants should vary with the population's self-reported intentions to assume financial risk. We apply time-series modeling to monthly birth counts by sex and weight from the Swedish Medical Birth Registry between January 1993 and December 2010. We gauge risk aversion with monthly data from the Micro Index of the Swedish Consumer Tendency Survey (MISCT). Consistent with our argument that nonconscious decisional biology shares risk aversion with conscious decisions, we find that the incidence of VLBW among male infants in Sweden varies with the population's self-reported intentions to assume financial risk. We find increases above expected odds of a very low weight infant among males born 1 month after increases above expected levels of self-reported risk aversion in the Swedish population. We offer this finding as support for the argument that persistently high rates of VLBW arise, at least in part, from a combination of medical interventions and mechanisms conserved by natural selection to protect reproductive fitness.

Stress and Mood: The Moderating Role of Activity Inhibition

The present research tested the hypothesis that activity inhibition (as measured by the picture story exercise) moderates the relationship between stress and mood. Based on prior research that shows that (a) individuals high in activity inhibition restrain emotional and motivational impulses and (b) inhibiting negative emotion may lead to further emotional impairments, we assumed that individuals high in activity inhibition show evidence of increased negative mood when they are confronted with stressful events. Study 1 found evidence of increased negative mood-relevant thought among individuals high in activity inhibition who were confronted with the threat of social rejection. Study 2 found high negative mood among individuals high in activity inhibition who experienced many daily hassles. Also, participants high in activity inhibition reported a disproportionally higher amount of daily hassles in the middle (but not at the beginning) of a university semester. We suggest that this pattern of results can be accounted for by Wegner's (1994) theory of ironic effects of the suppression of thought and emotion.

Is hoping the same as expecting? Discrimination between hopes and response expectancies for nonvolitional outcomes

Despite the large literature on response expectancy effects, it is not clear to what degree individuals' hopes are associated with their response expectancies for nonvolitional outcomes. Indeed, it is not clear whether these two constructs are separate. The present study sought to: (1) determine if participants can distinguish between expectancies and hopes; and (2) examine the relations between expectancies and hopes in regard to non-volitional outcomes. Seventy-three volunteers completed items regarding 10 non-volitional outcomes, as well as measures of dispositional traits (i.e. optimism, pessimism, suppression). The results revealed significant differences between expectancies and hopes (P<0.001), and that these constructs were also correlated. Dispositional traits and prior experience were also found to contribute to hopes and expectancies.