Vulnerability to false memory: The effects of stress, imagery, trait anxiety, and depression

There is now abundant evidence that false memories can be created inside and outside the laboratory, and much is known about the kinds of techniques and manipulations that encourage the creation of false memories. However, rather less is known about the influence of naturally occurring variables over which the experimenter or clinician has little or no control. The current study investigated the influence of some of these variables on false memory creation. The influence of individual differences in depression, trait anxiety, imagery vividness and the interaction of these factors with stress was studied. Subjects studied series of pictures and words and then attempted to recall all the pictures presented, at a low-stress time and then later at a high-stress time. Intrusions from words at recall were the false memories in this study. Subjects who experience more vivid imagery were more vulnerable to false memories when they were stressed. Low trait anxious subjects were more likely to assign remember judgement to a false memory when they were stressed. These findings are discussed in terms of the source monitoring framework and implications for clinical practice. The author thanks Ainslie Lown for help in collecting and analyzing data from the first part of this study.     

Trait anxiety, trait depression, worry, and memory

A study is reported which investigated the proposal that high trait anxiety is associated with a memory bias for worry themes. Forty-five participants were categorised as being high or low trait anxious on the basis of scores on the (Spielberger et al., 1983) (Manual for the State-Trait Anxiety Inventory (Form Y) (1983)). The participants were requested to rate a number of worry and non-worry statements for how much they generally thought about the issues represented by them. Analysis of the ratings given by the participants showed that low trait anxiety individuals thought about the non-worry items significantly more than worry items. The high trait anxiety participants, however, showed little or no difference in the amount of time spent thinking about worry and non-worry themes. In a subsequent free recall task of the statements it was observed that the low trait anxiety group recalled significantly more non-worry than worry items, whereas there was no such difference for the high trait group. It was also found that the degree of memory bias was related to both positive affectivity and trait anxiety. The implications of such findings are discussed.     

Mood-congruent true and false memory: effects of depression

The Deese/Roediger-McDermott paradigm was used to investigate the effect of depression on true and false recognition. In this experiment true and false recognition was examined across positive, neutral, negative, and depression-relevant lists for individuals with and without a diagnosis of major depressive disorder. Results showed that participants with major depressive disorder falsely recognised significantly more depression-relevant words than non-depressed controls. These findings also parallel recent research using recall instead of recognition and show that there are clear mood congruence effects for depression on false memory performance.     

Determinants of pain experience: Perceived competence, trait anxiety, trait depression and moderator effects

The study examined determining and moderator variables of chronic pain experience. The data indicated strong influences of perceived competence as well as trait anxiety and trait depression. Furthermore some moderator effects could be detected, which were able to explain some extreme states of pain in addition to the effect of the determining variables: subjects with low perceived competence and high trait anxiety suffered significantly more from their pain than subjects with high perceived competence or low trait anxiety. The consequences for further research as well as for pain therapy are discussed.     

The effects of stress on state and trait anxiety in emotionally disturbed,normal, and delinquent children

The effects of stress on trait and state anxiety of emotionally disturbed, normal, and delinquent children were assessed using the State-Trait Anxiety Inventory for Children (STAIC). This scale measures both transitory feelings of apprehension and tension that vary over time as a function of situational stress (A-State) and individual differences in the disposition to experience such anxiety states (A-Trait). Results indicated that A-State increased as a function of stress, whereas A-Trait was relatively stable and impervious to the temporary effects of stress. Use of the STAIC with normal and deviant populations was supported.     

Cognitive trait anxiety,stress and effort interact to predict inhibitory control

Few studies have focussed on the link between anxiety and inhibitory control in the absence of stimulus-driven external threat. This two-part experiment examined the interactions between (1) somatic trait anxiety, somatic situational stress (i.e. threat of electric shock), and effort, and (2) cognitive trait anxiety, cognitive situational stress (i.e. ego-threat instructions), and effort, on inhibitory processes using a Go-No-Go paradigm. Trait anxiety was operationalised using questionnaire scores and effort was operationalised using a visual analogue scale. Performance effectiveness was measured using the d′ parameter from signal detection theory and processing efficiency was indexed by the ratio of d′ to response time on correct trials. Results indicated that somatic trait anxiety and stress did not predict effectiveness or efficiency. Cognitive trait anxiety and stress were associated with both inhibitory effectiveness and efficiency deficits; however, contrary to expectations these deficits were evident at higher rather than lower mental effort. Results suggest a distinction between how somatic and cognitive anxiety manifest on tasks involving inhibitory control.     

The cortisol awakening response: Associations with trait anxiety and stress reactivity

This study investigated the extent to which trait anxiety and state anxiety in response to stress are associated with the cortisol awakening response (CAR).Fifty-one healthy participants were recruited. State anxiety measures were taken in anticipation of and during a laboratory stressor. Salivary cortisol levels were measured immediately upon awakening (at 0, 15, 30, and 45 min) on two consecutive mornings. Cortisol awakening response was assessed by the area under the curve with respect to zero (AUC_G).The magnitude of the CAR was found to be negatively associated with both trait anxiety and anticipatory anxiety. Moreover, regression analysis showed that the effects of trait anxiety on the AUC_G were mediated by anticipatory anxiety.These results suggest that the CAR is influenced by trait anxiety. Moreover, the effect of trait anxiety on the CAR seems to operate by impacting on psychological stress reactivity (i.e., anticipatory anxiety).     

Anxiety sensitivity in adolescents: factor structure and relationships to trait anxiety and symptoms of anxiety disorders and depression

The current study examined the anxiety sensitivity construct in a large sample of normal Dutch adolescents aged 13-16 years (n=819). Children completed the Childhood Anxiety Sensitivity Index (CASI; Silverman, W. K., Fleisig, W., Rabian, B. & Peterson, R. A. (1991). Journal of Clinical Child Psychology, 20, 162-168) and measures of trait anxiety, anxiety disorder symptoms and depression. Results showed that (1) anxiety sensitivity as indexed by the CASI seems to be a hierarchically organized construct with one higher-order factor (i.e., anxiety sensitivity) and three or four lower-order factors, (2) anxiety sensitivity and trait anxiety were strongly correlated, (3) anxiety sensitivity was substantially connected to symptoms of anxiety disorders (in particular of panic disorder and agoraphobia) and depression, and (4) anxiety sensitivity and trait anxiety both accounted for unique proportions of the variance in anxiety disorder symptoms. Altogether these findings are in agreement with those of previous research in adult and child populations, and further support the notion that anxiety sensitivity should be viewed as an unique factor of anxiety vulnerability.     

Effects of mindfulness-based stress reduction on prenatal stress,anxiety and depression

Low well-being is common among Chinese pregnant women but few effective interventions currently exist to improve prenatal stress and negative emotions. Mindfulness-based stress reduction (MBSR) has been proved to be effective in reducing stress and rarely studies were focused on Chinese pregnant women. The aim of the current paper is to investigate the effects of 8-week MBSR on prenatal stress, anxiety and depression among Chinese pregnant women. A sample of 66 pregnant women randomly allocated into either the MBSR group (n=34) or the control group (n=32). Participants in the MBSR group received a group 8-week, 90-min each time intervention. The results found a significant interaction between time and condition for prenatal stress (F=45.51, p<0.001, η ²=0.427), anxiety (F=19.30, p<0.001, η ²=0.240), while depression showed no time-by-group interaction (F=0.29, p=0.589, η ²=0.005). As for the sub-scale of state anxiety, while there was only no time effect (F=3.68, p=0.060, η ²=0.057). The findings of this study preliminary indicated effects of the MBSR intervention on self-reported prenatal stress and anxiety in comparison to a treatment-as-usual control. Effect on depression was not observed may due to the low level of depression of participants. This study provides preliminary evidence that MBSR is suitable for Chinese pregnant women and be effective in decreasing prenatal stress, anxiety.     

Vulnerability to depression,mild depression,and degree of self-schema consolidation

The present study investigated the degree of consolidation of self-schema content in mildly depressed individuals, individuals cognitively vulnerable to depression (but currently nondepressed), and nonvulnerable-nondepressed controls. All three groups of subjects were presented with pairs of adjectives involving one depressed and one nondepressed content adjective, and were asked to decide which of the two adjectives described them the best (or least). Following this, subjects rated each adjective on a 9-point degree of self-reference scale. On the basis of these two types of self-referent judgments, a measure of decision inconsistency was computed for each subject. In accord with predictions generated from a self-schema model of depression, similar decision inconsistency scores were found for mildly depressed and vulnerable-nondepressed individuals. In turn, both of these groups revealed greater decision inconsistencies than normal controls (the nonvulnerable-nondepressed group). Using the inconsistency measure as an index of the degree of consolidation of self-schema content, these findings suggest that relatively poor consolidation of depressed and nondepressed self-schema content may relate to both the etiology and maintenance of depression.     

The role of coping, anxiety, and stress in depression post-acute coronary syndrome

Depressive symptoms are common and can affect prognosis following acute coronary syndromes (ACS). This study examined the psychological factors, coping, anxiety, and perceived stress associated with depression following ACS. Psychological variables were assessed in 15 females and 66 males (M = 57 years, SD = 12). Repeated measures at 2, 12, and 24 weeks post-ACS compared depression, anxiety, perceived stress, and coping resources as determined by the Cardiac Depression Scale, Beck Depression Inventory-II, State Trait Anxiety Inventory, Perceived Stress Scale, and Coping Resources Inventory. Depression, anxiety, and perceived stress remained high in the depressed group across time. Coping scores at 2 weeks post-ACS predicted depression scores at 24 weeks post-ACS. It appears that trait anxiety and coping resources are related to depressive symptoms post-ACS.     

False recall and false memory: the effects of instructions on memory errors

An experiment is reported using a list-learning paradigm in which all the words have a common associate, which is known to be frequently but erroneously recalled. Four experimental conditions were used. One group was instructed to think about the meanings of the words, another to relate them to personal experience, another to create images of the words, and another to chain the words into a sentence. Both thinking about the meaning and chaining increased recall of the words actually presented, but in none of the conditions was there any effect on false recall. The implications and relevance of these findings to the controversy over false memories are discussed. © 1998 John Wiley & Sons, Ltd.     

Relationship of fitness to depression, state and trait anxiety, internal health locus of control, and self-control.

Aerobic forms of exercise have been suggested as one approach to reducing the costly effects of excessive or chronic stress, yet the results of some studies related to this assumption have been mixed. The purpose of this study was to estimate the correlation between emotional states and fitness level among 8 women and 9 men who were recreational cyclists. Fitness was determined by cycle ergometric testing (VO2 max). Psychometric measures included the short version of the Beck Depression Inventory, the internal portion of the Multidimensional Health Locus of Control Scale, Spielberger's State-Trait Anxiety Inventory, and the Self-control Questionnaire. Significant correlations were observed between fitness and the depression scores, internal locus of control, and self-control measures. These results tend to support previous findings regarding the possible link between physical fitness and improved emotionality.     

Correlations of attitudes toward physician-assisted suicide, death depression, death obsession, and trait anxiety

In a sample of 112 Kuwaiti college students, approval of physician-assisted suicide was not significantly correlated with scores on trait anxiety, death depression, or death obsession.     

Correlates of autobiographical memory specificity: the role of depression, anxiety and childhood trauma

The present study examined the role of childhood trauma, major depressive disorder (MDD), and anxiety disorder (AD) in overgeneral autobiographical memory. Ninety-three outpatients and 24 healthy controls completed a childhood trauma questionnaire and an autobiographical memory test (AMT). Results showed that MDD diagnosis rather than trauma history predicted AMT-performance. Memory specificity was not related to AD diagnosis, recovered MDD, or self-rated depression severity. The present findings cast doubts on theories that emphasize the role of childhood trauma in overgeneral autobiographical memory.     

Predicting depression, anxiety and self-harm in adolescents: The role of perfectionism and acute life stress

Despite the growing evidence that perfectionism is associated with adolescent psychological distress, few studies have investigated this relationship prospectively with measures designed for use in adolescent populations. In the present study, within a diathesis-stress framework, we investigated the extent to which perfectionism and acute life stress predict depression, anxiety and self-harm among adolescent school children (n = 515) over a 6 month period (Time 1-Time 2). Socially prescribed perfectionism (SPP), self-oriented perfectionism-critical (SOP-critical) and the associated interactions with acute life stress differentially predicted anxiety, depression and self-harm. Acute life stress was an independent predictor of depression, anxiety and self-harm. SPP predicted depression and interacted with acute life stress to predict self-harm. SOP-critical and the SOP-critical by acute life stress interaction predicted anxiety. Self-oriented perfectionism-striving (SOP-striving) did not predict any of the Time 2 measures of distress. The dimensions of perfectionism are differentially associated with psychological distress. Tailored clinical interventions focused on adolescent perfectionism should offer promise in tackling psychological morbidity in adolescence.     

Motor performance under three levels of trait anxiety and stress

In general, the interactive effects of trait anxiety and stress on motor performance have been neglected in assessing the viability of the inverted-U hypothesis. The present investigation tested the inverted-U hypothesis using three levels of trait anxiety and psychological stress. Performance results produced an inverted-U curve for the three levels of stress, with subjects in the moderate-stress condition displaying the highest performance. In addition, a significant trait anxiety x stress interaction indicated that high trait-anxious subjects performed best in the low-stress condition, while low trait-anxious subjects performed best in the high-stressed condition. The discussion concerns theories attempting to explain the relationship between anxiety and motor performance.     

The relation of depression and anxiety to life‐stress and achievement in students

Objectives: An apparent increase in seriously disturbed students consulting student health services in the UK has led to concern that increasing financial difficulties and other outside pressures may affect student mental health and academic performance. The current research investigated whether student anxiety and depression increases after college entry, the extent to which adverse life experiences contribute to any increases, and the impact of adversity, anxiety and depression on exam performance. Method: 351 UK‐domiciled undergraduates completed questionnaires one month before university entry and mid‐course. The Hospital Anxiety and Depression Scale (HADS: Zigmond & Snaith, 1983) was administered at both time points and a modified List of Threatening Experiences (Brugha, Bebbington, Tennant, & Hurry, 1985) was administered mid‐course. Results: By mid‐course 9% of previously symptom‐free students became depressed and 20% became anxious at a clinically significant level. Of those previously anxious or depressed 36% had recovered. After adjusting for pre‐entry symptoms, financial difficulties made a significant independent contribution to depression and relationship difficulties independently predicted anxiety. Depression and financial difficulties mid‐course predicted a decrease in exam performance from first to second year. Conclusions: This is the first study to confirm empirically that financial and other difficulties can increase British students' levels of anxiety and depression and that financial difficulties and depression can affect academic performance. However, university life may also have a beneficial effect for some students with pre‐existing conditions. With widening participation in higher education, the results have important implications for educational and health policies.     

Directionality of affective priming: effects of trait anxiety and activation level

Among the most influential models of automatic affective processing is the spreading activation account (Fazio, Sanbonmatsu, Powell, & Kardes, 1986). However, investigations of this model by different research groups using the pronunciation task in an affective priming paradigm yielded contradictory results. Whereas one research group reported congruency effects, another obtained reversed priming effects (contrast effects), and still another found null effects. In Experiment 1, we were able to show an influence of trait anxiety on the direction of the affective priming effect. By using a multiple priming paradigm in Experiment 2, we were able to link the occurrence of reversed priming effects to increased levels of activation of affective representations. We propose that this relation might underlie the influence of trait anxiety on the direction of affective priming effects. Both experiments indicate that automatic evaluation in an affective network is substantially moderated by personality traits and activation level.