Eating Behavior—Choice or Reconstruction of Past Experience? A Randomized Clinical Trial of Changing Eating Intentions of Healthy Adults Through Hypnotic Suggestions

Recent meta-analyses have shown that psychological interventions have a small to medium effect on weight loss. We propose here a different approach to changing eating intentions. According to the Free Will literature, people decide to act before they acknowledge it, and they decide based on the reconstruction of previous experiences. The action can thus be inhibited immediately (max 100 ms) after awareness. We wanted to test if intervention based on this model, using hypnotic suggestions, can effectively change the intentions of eating. This study aims to identify which format of hypnotic suggestion can be more effective in changing eating intentions regarding high-calorie foods. Therefore, 88 healthy adult participants randomized in four groups received one session of hypnotic induction and suggestions or placebo. We measured the eating intentions through a computer task in which participants could choose pictures of low and high caloric food before, during, and after hypnosis. For the within-subject effect, results showed that two types of hypnotic suggestions significantly impacted the intentions of eating on high-calorie foods with large-effect, namely Cognitive Rehearsal (d = 0.81, p < .001) and Memory Substitution (d = 0.82, p < .001). After controlling for pretest ratings, we found a significant between-effect: the Cognitive Rehearsal group differed significantly from the Control in terms of intentions of eating (d = 0.85, p < .05). We conclude that hypnosis with Cognitive Rehearsal suggestions can help to positively impact the intentions of eating.     

Is working memory necessary for implementation intentions to enhance prospective memory in older adults with cognitive problems?

Implementation intentions are an effective strategy for improving prospective memory in older adults. However, their efficacy has never been assessed in older individuals with cognitive problems (i.e., individuals with subjective memory complaints or objective memory impairments). Furthermore, although most authors consider implementation intentions to depend on automatic processes, some studies have shown the necessity of residual preserved controlled processes for implementation intentions to be efficient. We examined the efficacy of implementation intentions in prospective memory in 45 older participants consulting a memory clinic. Half of the participants were instructed to form an implementation intention, the other half receiving standard instructions. Analyses showed that working memory moderated the efficacy of implementation intentions, which were efficient only in individuals with better working memory. These results corroborate the claim that a minimal level of cognitive resources is required for the technique, although implementation intentions might depend principally on automatic processes.     

Eye movements during mental time travel follow a diagonal line

Recent research showed that past events are associated with the back and left side, whereas future events are associated with the front and right side of space. These spatial–temporal associations have an impact on our sensorimotor system: thinking about one’s past and future leads to subtle body sways in the sagittal dimension of space (Miles, Nind, & Macrae, 2010). In this study we investigated whether mental time travel leads to sensorimotor correlates in the horizontal dimension of space. Participants were asked to mentally displace themselves into the past or future while measuring their spontaneous eye movements on a blank screen. Eye gaze was directed more rightward and upward when thinking about the future than when thinking about the past. Our results provide further insight into the spatial nature of temporal thoughts, and show that not only body, but also eye movements follow a (diagonal) “time line” during mental time travel.     

A time-lagged analysis of the effect of authentic leadership on workplace bullying,burnout, and occupational turnover intentions

Destructive interpersonal experiences at work result in negative feelings among employees and negative work outcomes. Understanding the mechanisms through which bullying can lead to burnout and subsequent turnover is important for preventing and managing this problem. Leaders play a key role in shaping positive work environments by discouraging negative interpersonal experiences and behaviours. The aim of this study is twofold. Specifically we aim to examine the relationship between authentic leadership and new graduate nurses experiences of workplace bullying and burnout over a 1-year timeframe in Canadian healthcare settings. Furthermore we aim to examine the process from workplace bullying to subsequent burnout dimensions, and to job and career turnover intentions. Results of structural equation models on new graduate nurses working in acute care settings in Ontario (N = 205) provide support for the hypothesized model linking supervisor's authentic leadership, subsequent work-related bullying, and burnout, and these in turn to job and career turnover intentions. Thus, the more leaders were perceived to be authentic the less likely nurses’ were to experience subsequent work-related bullying and burnout and to want to leave their job and profession. The results highlight the important role of leadership in preventing negative employee and organizational outcomes.     

Don't Predict the Future–Direct it! Comments on the intellectual history,the Logical and Applicative Visibility,and the Underlying Assumptions of Directed Evolution (DE)

The best way to predict the future is to invent it.

—Alan Kay ¹ 1. Alan Kay is one of the inventors of the Smalltalk programming language and one of the originators of the idea of Object Oriented Programming. He is the conceiver of the laptop computer and the architect of the modern windowing GUI.

It is obvious that there are patterns of cultural change—evolution in the neutral sense—and any theory of cultural change worth more than a moment's consideration will have to be Darwinian in the minimal sense of being consistent with the theory of evolution by natural selection of Homo sapiens.

—Daniel Dennett ² 2. Daniel C. Dennett is a Professor of Philosophy and Director of the Center for Cognitive Studies at Tufts University. He is the author of several books, including Consciousness Explained (1991), Darwin's Dangerous Idea (1995), and Kinds of Minds (1996). This quote is taken from his forward to Darwinizing Culture (Aunger 2000 Aunger, R. 2000. Darwinizing culture: The status of memetics as a science, Oxford and New York: Oxford University Press.  [Google Scholar], ix).

The future is here. It's just not widely distributed yet.

—William Gibson ³ 3. In the early 1980s William Gibson wrote Neuromancer, coining the term “cyberspace” to describe computer-generated virtual realities long before we saw the similarities with today's Internet.

It is the magician's wand, by means of which he may summon into life whatever form and mould he pleases.

—Charles Darwin commenting on the power of artificial selection ⁴ 4. Here Darwin is explaining the power of artificial selection and its potential for the directed evolution of biological systems (domestication and commercially oriented breeding) in his Origin of Species (1859, 68).      

Narrative self and high risk for schizophrenia: remembering the past and imagining the future

ABSTRACT

We examined the narrative self of those at high psychometric risk for schizophrenia (HR). Eighty undergraduate students wrote personal narratives about a turning-point event in their life, and about a possible future. The turning-point narratives were coded for topic, specificity, event valence, valence of causal coherence link, overall level of causal coherence, and agency. The future narratives were coded for the number and valence of goals, topic of goals, and specificity of goals. Word count was applied to all narratives. The HR group expressed lower levels of agency and a trend of lower levels of causal coherence when narrating turning-point events. When imagining their futures, HR participants produced shorter narratives and showed a trend of having fewer goals. Including the dimensions of both the turning point and the future narratives revealed that the HR group membership was best predicted by lower levels of agency and of causal coherence in the turning-point narrative, and fewer words in the future narrative. Narratives differed specifically in those few elements that are critical for the achievement of narrative continuity. Consistent with the theory, people at high risk for schizophrenia already present, to some extent, an impoverishment in their narrative sense of self.     

Remembering the past and imagining the future: Examining the consequences of mental time travel on memory

Cognitive, neuropsychological, and neuroimaging evidence suggests that remembering the past and imagining the future rely on overlapping processes in episodic memory. The three experiments reported here examine the consequences of remembering the past and imagining the future on the accessibility of other information in memory. Participants first studied events associated with a specific context and then either (a) retrieved past autobiographical events associated with that same context or (b) imagined future autobiographical events associated with that same context. Replicating and extending evidence of retrieval-induced forgetting, remembering autobiographical events from the past caused participants to forget the related studied events. However, imagining future autobiographical events failed to cause participants to forget the related studied events. These results suggest an important difference in the memorial consequences of remembering and imagining.     

Smell and Taste Classification of the Same Stimuli

Much literature has suggested that people who are discriminated against or are in collectivist cultures are particularly susceptible to the social consequences of society. In the present study, the authors conducted 3 experiments to test how this factor influences attitudinal versus normative control over behaviors. First, they measured males’ and females’ attitudes, subjective norms, and behavioral intentions with respect to a large number of behaviors. Although between-participants analyses were mostly uninformative, within-participants analyses uncovered strong evidence that behaviors are more under attitudinal control for females than for males. Similar analyses in a crosscultural experiment involving participants from the United States, the United Kingdom, China, and Mexico support the hypothesis that behaviors are more under attitudinal control for collectivists than for individualists. Finally, experimental data collected in the United States and Saudi Arabia further support this conclusion. Taken together, the findings suggest that although social consequences are both “social” and “consequences,” the latter is more important than the former.     

Why does asking questions change health behaviours? The mediating role of attitude accessibility

Objective: The question-behaviour effect (QBE) refers to the finding that measuring behavioural intentions increases performance of the relevant behaviour. This effect has been used to change health behaviours. The present research asks why the QBE occurs and evaluates one possible mediator – attitude accessibility.

Design: University staff and students (N = 151) were randomly assigned to an intention measurement condition where they reported their intentions to eat healthy foods, or to one of two control conditions.

Main outcome measures: Participants completed a response latency measure of attitude accessibility, before healthy eating behaviour was assessed unobtrusively using an objective measure of snacking.

Results: Intention measurement participants exhibited more accessible attitudes towards healthy foods, and were more likely to choose a healthy snack, relative to control participants. Furthermore, attitude accessibility mediated the relationship between intention measurement and behaviour.

Conclusion: This research demonstrates that increased attitude accessibility may explain the QBE, extending the findings of previous research to the domain of health behaviour.     

A randomised controlled trial of the effects of implementation intentions on women's walking behaviour

The combination of low physical activity rates and increased cardiovascular deaths indicate the overwhelming need for behaviour change interventions that can effectively promote physical activity among sedentary women. This 11-week randomised controlled trial examined the effects of an implementation intentions intervention on sedentary women's walking behaviour. Seventy-five women (M age = 48.17) were randomly assigned to either a control group where they were required to self-monitor their daily pedometer-determined step count or to an experimental group where they were asked to form specific walking plans (i.e. implementation intentions) every 6 weeks and to self-monitor their daily pedometer-determined step count. Measures of exercise intentions, perceived behavioural control, scheduling and barrier self-efficacy were administered at baseline, week 6 and week 11. Analyses indicated higher step counts over the first 6 weeks for women in the experimental condition (p < 0.02). Furthermore, higher self-efficacy to schedule (p < 0.01) and overcome walking barriers (p < 0.03), as well as higher perceptions of behavioural control (p < 0.02) were found at week 11 for women in the experimental versus control condition. However, none of the control beliefs were found to mediate the effects of the intervention on the women's walking behaviour. Furthermore, the intervention did not have any effect on the strength of the goal intention–behaviour relationship. The findings suggest implementation intentions are an effective strategy for initiating leisure-time walking within sedentary women.