Fishing for happiness: the effects of generating positive imagery on mood and behaviour

Experimental evidence using picture-word cues has shown that generating mental imagery has a causal impact on emotion, at least for images prompted by negative or benign stimuli. It remains unclear whether this finding extends to overtly positive stimuli and whether generating positive imagery can increase positive affect in people with dysphoria. Dysphoric participants were assigned to one of three conditions, and given instructions to generate mental images in response to picture-word cues which were either positive, negative or mixed (control) in valence. Results showed that the positive picture-word condition increased positive affect more than the control and negative conditions. Participants in the positive condition also demonstrated enhanced performance on a behavioural task compared to the two other conditions. Compared to participants in the negative condition, participants in the positive condition provided more positive responses on a homophone task administered after 24h to assess the durability of effects. These findings suggest that a positive picture-word task used to evoke mental imagery leads to improvements in positive mood, with transfer to later performance. Understanding the mechanisms underlying mood change in dysphoria may hold implications for both theory and treatment development.     

The extent and nature of imagery during worry and positive thinking in generalized anxiety disorder

Clients in treatment for Generalized Anxiety Disorder (GAD) were compared to a control group to assess the extent and nature of imagery during worry or while thinking about a personally relevant positive future event. Two methods were used to assess mentation and were completed in counter balanced order within the worry and positive conditions. One method assessed the occurrence of imagery by requiring participants to categorize their mentation as verbal thoughts or images every 10 s. The other method involved participants estimating the duration of any imagery that occurred in the previous 10 s. Imagery during worry occurred less often than while thinking about a positive event for both groups, but GAD clients had a more pronounced deficit of imagery during worry than the control group. Images that occurred were briefer during worry than while thinking about a positive future event and were briefer in the GAD than the control group for both worry and positive conditions. The results thus confirmed that imagery is less common during worry in clients with GAD but also demonstrated that the imagery that does occur in GAD is briefer.     

Explanatory models for mental illness endorsed by Christian clergymen: The development and use of an instrument in Singapore

Researchers have attempted to elicit the explanatory models used by different populations to understand mental illness, since these models can influence how populations use mental-health treatment. However, little effort has been made to understand the explanatory models used by Christian clergymen. This is despite their important role as providers of mental-health care in many Asian and Western societies. Neither are there suitable instruments to conduct such investigations. This study attempts to present a suitable instrument for such research and explore the belief structure of this population by administering a modified version of the Opinions about Psychological Problems to a representative sample of Singaporean Christian clergymen. Factor-analytic techniques revealed five factors which were explained as (1) a Traditional Christian and (2) a Deliverance etiology, both models implicating religious causes for mental illness, (3) a Poor Coping and (4) Internal Conflicts etiology, essentially being psychological explanations and an (5) Organic etiology model. The Traditional Christian model received the greatest endorsement, followed by the Poor Coping model, while the Organic model had the least acceptance. The belief structure used by nearly half of the respondents was noted to be complex, involving a combination of religious, psychological, and organic explanations.     

Processing of emotional meaning in anxiety

Abstract

Previous research has indicated that anxiety and depressive states do not lead to speeding of lexical decisions for mood-congruent words. Theoretical considerations, and some data, suggest that such mood-congruent speeding effects should be more apparent in affective decisions. In three experiments we found no evidence that anxious subjects are faster when making affective decisions for congruent (threatening) words, whether or not these subjects had been recently exposed to the same words. It is concluded that the processes involved in the attentional and interpretive processing of threatening stimuli by anxious subjects are different from those involved when making a conscious decision about emotional meaning.     

Autobiographical memory and clinical anxiety

Abstract

Previous experiments on the recall of threatening and neutral information in clinically anxious subjects have yielded mixed results. The present study assessed autobiographical memory in patients with generalised anxiety disorder (GAD), and normal controls. Subjects were first presented with neutral cue words and asked to respond with any personal memory. GAD subjects judged the content of their own memories as more consistent with anxious mood, and less consistent with pleasant mood, than that reported by controls. Subjects were then again presented with neutral cue words, but with instructions to provide either “anxious” or “nonanxious” personal memories, on specified trials. Significant interactions between group and instruction condition indicated that anxious subjects recalled more anxiety-evoking memories, and recalled them more rapidly, relative to controls. Ratings by blind judges did not support the hypothesis that this apparent difference in the content of autobiographical recall was an artefact due to anxious subjects labelling memories as being more anxiety evoking than would controls. Possible explanations of the findings, and reasons for the apparent discrepancy between these and earlier results, are discussed.     

The causal role of interpretive bias in anxiety reactivity

Elevated anxiety vulnerability is associated with a tendency to interpret ambiguous stimuli as threatening, but the causal basis of this relationship has not been established. Recently, procedures have been developed to systematically manipulate interpretive bias, but the impact of such manipulation on anxiety reactivity to a subsequent stressor has not yet been examined. In the present study, training procedures were used to induce interpretive biases favoring the threatening or nonthreatening meanings of ambiguous information in a sample of 48 undergraduate students. Following this interpretive training, participants' emotional reactions to a stressful video were assessed. The finding that the manipulation of interpretive bias modified emotional reactivity supports the hypothesis that interpretive bias can indeed play a causal role in anxiety vulnerability.     

On the malleability of emotional encoding

The encoding of emotional events has sometimes been regarded as automatic, because the processing involved can occur outside awareness. However, this does not mean that emotional encoding cannot be controlled, although it may often be the case that people are unaware of how to do so, or even that such control is possible. Evidence is presented to show that the neural activation associated with fear-related stimuli can be modified by top-down control, and that related instructions can modify emotional vulnerability to stressful events. However, it is further argued that such effortful control is resource limited, and that more robust control might be achieved via repeated practice in accessing positive representations that inhibit competing negative meanings. Studies of attentional and interpretative encoding biases induced by practice show that they have causal effects on emotional vulnerability, by influencing how threatening events are encoded. Experimental investigations are beginning to reveal the critical processes underlying these changes in emotional vulnerability, and it is argued that the same approach is likely to be helpful in addressing questions relevant to therapeutic change.     

REDUCING RISK OF PRESSURE SORES: EFFECTS OF WATCH PROMPTS AND ALARM AVOIDANCE ON WHEELCHAIR PUSH-UPS

People who use wheelchairs are at risk for developing pressure sores. Regular pressure relief, in the form of a wheelchair push-up, is one way to reduce the likelihood of pressure sores. We examined the effects of antecedent (i.e., instructions, audible prompts) and consequent (i.e., alarm avoidance) events on wheelchair push-ups, using a multiple baseline analysis with 2 participants with spina bifida. Results suggest that the combined procedure was more effective than either antecedent or consequent events alone, and there is some evidence suggesting maintenance of effects over time.