Sleep fragmentation and lucid dreaming

Lucid dreaming—the phenomenon of experiencing waking levels of self-reflection within one’s dreams—is associated with more wake-like levels of neural activation in prefrontal brain regions. In addition, alternating periods of wakefulness and sleep might increase the likelihood of experiencing a lucid dream. Here we investigate the association between sleep fragmentation and lucid dreaming, with a multi-centre study encompassing four different investigations into subjective and objective measures of sleep fragmentation, nocturnal awakenings, sleep quality and polyphasic sleep schedules. Results across these four studies provide a more nuanced picture into the purported connection between sleep fragmentation and lucid dreaming: While self-assessed numbers of awakenings, polyphasic sleep and physiologically validated wake-REM sleep transitions were associated with lucid dreaming, neither self-assessed sleep quality, nor physiologically validated numbers of awakenings were. We discuss these results, and their underlying neural mechanisms, within the general question of whether sleep fragmentation and lucid dreaming share a causal link.     

Multimethod assessment of depression in sexually abused girls

This study measured depression in sexually abused Black girls using the Children's Depression Inventory (Kovacs & A. T. Beck, 1977), the Internalization scale of the Child Behavior Checklist (Achenbach & Edelbrock, 1983), and the Rorschach Depression Index (Exner, 1986). There were no significant correlations between these self-report, behavior observation (by parental report), and projective measures. The abused subjects had high scores on the behavior observation and Rorschach scales. Consistent with past research, negative results were obtained with the self-report instrument. We suggest that the low scores on self-report measures of distress produced by sexually abused children may be the result of guardedness or defensiveness rather than a genuinely low level of dysphoria in this population. There were no significant relations between abuse characteristics and scores on the depression measures. Scores on Rorschach measures of organizational activity (Zf) and available coping resources (EA) were generally positively related to depression within the abuse group and negatively related to depression within the control group.     

Multimethod Assessment of Depression in Sexually Abused Girls

This study measured depression in sexually abused Black girls using the Children's Depression Inventory (Kovacs & A. T. Beck, 1977), the Internalization scale of the Child Behavior Checklist (Achenbach & Edelbrock, 1983), and the Rorschach Depression Index (Exner, 1986). There were no significant correlations between these self-report, behavior observation (by parental report), and projective measures. The abused subjects had high scores on the behavior observation and Rorschach scales. Consistent with past research, negative results were obtained with the self-report instrument. We suggest that the low scores on self-report measures of distress produced by sexually abused children may be the result of guardedness or defensiveness rather than a genuinely low level of dysphoria in this population. There were no significant relations between abuse characteristics and scores on the depression measures. Scores on Rorschach measures of organizational activity (Zf) and available coping resources (EA) were generally positively related to depression within the abuse group and negatively related to depression within the control group.     

Clinical validation of a sleep assessment device

We have previously reported on the use of a sleep assessment device (SAD) with non-insomniac subjects. The SAD works by generating a brief, soft tone about every 10 min throughout the night and tape recording verbal responses to these cues. The sleep patterns reconstructed from the night's tape recordings proved highly concordant with EEG records. The present study tested the SAD against the EEG standard in 20 nights of monitoring chronic insomniacs. No significant differences were found between the SAD and EEG records with respect to sleep latency, duration of awakenings during the night, total sleep time and sleep efficiency percentage. The EEG detected many more very brief awakenings during the night than did the SAD due to the continuous monitoring by the former. The SAD proved to be a non-intrusive measure of sleep according to three independent measures. The usefulness of the SAD as a measure of sleep in the natural environment was discussed.     

Sleep physiology and psychological aspects of the fibrositis (fibromyalgia) syndrome

Fibrositis (fibromyalgia) patients were compared with normal controls in terms of electrophysiology (EEG), self-report indicants of awakening, quality of sleep, behaviourally signalled awakenings, and Symptom Check List 90R (SCL-90R) scores. The results differentiated fibrositis patients from normal controls in terms of SCL-90R scores, with fibrositis patients showing significantly more psychopathology. Fibrositis patients had more alpha EEG sleep and less REM and Stage 1 sleep. They were better able to recall their behaviourally signalled awakenings the following morning and reported qualitatively less satisfying sleep than the normal controls. The alpha EEG sleep anomaly may reflect a vigilant arousal state during nocturnal sleep and result in the daytime experience of unrefreshing sleep, psychologic distress, that re-enforces the perpetuation of the sleep-related symptoms.     

Amelioration of infant sleep disturbances: II. Effects of scheduled awakenings by compliant parents

Twelve infants and toddlers who exhibited spontaneous awakening and crying episodes during the night were subjected to scheduled awakenings by their parents. Scheduled awakenings were determined from individual baseline data, and these consisted of awakening, feeding, and consoling the child about 15 to 30 minutes before typical spontaneous awakening times. Once spontaneous awakenings were precluded, scheduled awakenings by the parents were faded out and posttreatment data were collected. The technique appeared effective for most children when the parents complied with the procedure.     

Interrelationships among three measures of preference for cognitive style based on hemisphere specialization theory

Right and left cerebral hemisphere and limbic scores derived from the Herrmann Brain Dominance Profile were correlated with left, right, and integrated scores from the Torrance-Reynolds Your Style of Learning and Thinking and four cognitive style scores from the Kolb Learning Style Inventory. Coefficients from 40 students in occupational therapy indicated low moderate positive relationships between like-named hemisphere scores, lack of significant relationships between cognitive style and two independent measures of hemispheric preference, and relative independence of preferred hemisphere mode as well as relative independence between cerebral and limbic systems. The data are interpreted as requiring cautious concern about the validity of these measures by potential users.     

Relationships of Objective and Projective Dependency Scores to Sex Role Orientation in College Student Participants

Research on the dependency-sex rote orientation relationship indicates that when objective dependency measures are used, participants show positive correlations between dependency and femininity scores, and negative correlations between dependency and masculinity scores. In this study, a mixed-sex sample of 87 undergraduates (47 women and 40 men) completed widely used objective and projective measures of dependency, and a self-report measure of sex role orientation. Consistent with previous studies in this area, high objective dependency scores were associated with high femininity scores and low masculinity scores in participants of both sexes. There were no relationships between projective dependency scores and sex role orientation scores in participants of either sex. Findings are discussed in the context of theoretical frameworks that distinguish implicit dependency needs from "self-attributed" dependency needs. The role that sex role socialization experiences play in determining participants' willingness to acknowledge dependency-related traits and behaviors on self-report tests is also discussed.     

Is the relationship between religiosity and personality ‘contaminated’ by social desirability as assessed by the Lie Scale? A methodological reply to Michael W. Eysenck (1998)

Abstract

Eysenck (Mental Health, Religion and Culture, 1, 11–19, 1998) raised a number of important theoretical and methodological issues in his review of the literature related to religion and the Eysenckian model of personality. The present aim is to methodologically address one such issue: Is the relationship between religiosity and personality ‘contaminated’ by social desirability as assessed by the Lie Scale? Data from two studies employing the Francis Scale of Attitude towards Christianity, alongside measures of Eysenckian Personality and Obsessionality among Northern Irish students are presented. In study one, using a survey design, significant associations were found between high scores on the religiosity scale and high scores on the Obsessional Trait Scale and low scores on the Psychoticism Scale. These findings remained significant even after the Lie Scale scores were statistically partialled out. In study two, using a repeated measures experimental design, respondents completed the questionnaires two weeks apart. However, on the second occasion they were connected to a ‘bogus pipeline’. No significant differences were found between scores on the two administrations. In addition, significant associations were found between high scores on the religiosity scale and high scores on the Obsessional Symptom Scale and low scores on the Psychoticism Scale. It is argued that the present studies provide further support that the association between religiosity and the personality traits of obsessionality and psychoticism are not simply a function of social desirability.     

Low-End Specificity of Four Depression Measures: Findings and Suggestions for the Research Use of Depression Tests

Past research has found that very low scorers on the Beck Depression Inventory (BDI) tend to respond in a fake-good manner on the Minnesota Multiphasic Personality Inventory (MMPI) validity scales. This finding was interpreted as evidence of poor low-end specificity. This study replicated and extended this work by evaluating the low-end specificity of four popular depression measures. The evidence of problems with low-end specificity was strong for the BDI and marginal for the Profile of Mood States depression subscale. Interestingly, MMPI scores in the normal range were associated with fake-good responding, whereas very low and high scores were not. There was no evidence of an association between fake-good responding and scores on Exner's Depression Index for the Rorschach. Implications of these findings and guidelines for dealing with problems with low-end specificity in research are discussed.     

The electrophysiological correlates of dream recall and nonrecall from stage 2 sleep

This research examined the relationship between cortical activation, defined by electroencephalographic (EEG) measures, and the ability to recall dreams following awakenings from Stage 2 sleep. Period-analyzed EEG data from 40 subjects were examined for the preawakening, postawakening, and preawakening-to-postawakening time intervals. Recall differed from nonrecall at the postawakening and preawakening-to-postawakening periods on measures of muscle activity and time spent in the sigma (12-16 Hz) frequency band. There were no distinctions in recall ability on EEG hemispheric asymmetry measures. Generally, the findings do not support the hypothesis linking increased recall ability to increases in cortical activation prior to awakening. However, the recall groups depicted a different pattern of arousal in their transition from sleep to wakefulness.     

Handedness, emotional problems, and schizotypy

The purpose of this study was to analyse the relationship between emotional or behavioural problems and schizotypy. An assessment of handedness and schizotypal personality traits were also performed by means of the Thinking and Perceptual Style Questionnaire, the Multidimensional Schizotypal Traits Questionnaire, the Edinburgh Handedness Inventory, and the Youth Self-Report. The sample comprised 296 participants with a mean age of 13.8 and a standard deviation of 1.34. Data indicate that adolescents with high scores on psychometric factors of schizotypy displayed higher patterns of problem behaviours as well as a significant difference in all the core factors of the Youth Self-Report, compared to those who scored low on these measures. Discriminant analysis showed that the core factors of the Youth Self-Report correctly classified 84% of the adolescents with high or low scores on psychometric schizotypy. Lastly, no significant association between the factors of schizotypy and left-handedness, right-handedness, or mixed-handedness was found.     

The role of objective health indicators and neuroticism in perceived health and psychological well-being among patients with chronic heart failure

A total of 119 clinically stable patients with symptomatic congestive heart failure (34 females, 85 males) were recruited from an outpatient hospital practice to explore the role of objective health indicators and neuroticism in subjective health (physical limitations) and psychological well-being. Patients were grouped according to the New York Heart Association functional class criteria (NYHA: indicator of functional status) and proatrial natriuretic factor (proANF), a cardiac hormone that maintains normal fluid balance and vascular resistance. Scores on these two objective indicators of disease severity were generally unrelated to psychological measures, whereas neuroticism scores (EPQ-N) were significantly correlated with indicators of subjective health (perceived disease-related physical limitations) and psychological well-being (depression, general life-satisfaction). Significant interactions between proANF and neuroticism appear due to low physical limitation score among subjects with elevated level of proANF and low scores on neuroticism. High physical limitation was reported by subjects with high level of proANF as well as high scores on neuroticism. Moreover, a marginal significant interaction between NYHA and EPQ-N scores in relation to severity of depression was detected by analyses from two-way ANOVA. Gender differences were due to higher proANF scores in males than females, whereas females scored higher than males on EPQ-N, perceived physical limitation and depression. Results from path analyses supported an indirect effect of neuroticism via perceived physical limitation for males. Possible mechanisms involved in these relations are discussed.     

Psychological characteristics of dieters and bulimics.

Two studies examined the continuum and discontinuity models of the relation between dieting and bulimia nervosa. In Study 1, 21 dieters, 19 bulimics, and 33 nondieting controls were compared on 24 measures. Multivariate analyses revealed that each of the groups differed significantly from the other two. Univariate analyses found 18 significant differences between bulimics and dieters and 1 significant difference between dieters and controls. In Study 2, 86 subjects completed measures of psychological functioning, dieting, and bulimia nervosa. On the basis of regression analyses using factor scores from the psychological variables as predictors, high scores on a psychopathology factor and low scores on a defensiveness factor predicted both bulimia and dieting. Low self-concept scores also predicted bulimia. These data indicate that both continuity and discontinuity characterize the relation between dieting and bulimia.     

Self-Report,Peer-Report,and Teacher-Report Measures of Childhood Depression: An Analysis by Item

We explored the low correlation among different types of childhood depression measures at the item level. The items from the Children's Depression Inventory (CDI), Peer Nomination Inventory of Depression (PNID), and the Child Behavior Checklist-Teacher Report Form (CBCL-T) were combined, and both first- and second-order factor analyses were conducted. Results indicate that self-report, peer-report, and teacher-report assessments of depression measure generally uncorrelated constructs. Second-order analysis suggests that depression as a global construct is being measured to some degree by items from all three instruments. Canonical analysis was employed to identify items that best predicted CDI, PNID, and CBL-T summary scores simultaneously. Also, the relationship between specific items with similar content was investigated. Results from these analyses generally supported a conclusion that the three types of measures yield scores that are primarily independent and that the use of summary scores is not masking stronger relationships within measures. These findings have implications for clinical practice and construct elaboration.     

Self-report, peer-report, and teacher-report measures of childhood depression: an analysis by item.

We explored the low correlation among different types of childhood depression measures at the item level. The items from the Children's Depression Inventory (CDI), Peer Nomination Inventory of Depression (PNID), and the Child Behavior Checklist-Teacher Report Form (CBCL-T) were combined, and both first- and second-order factor analyses were conducted. Results indicate that self-report, peer-report, and teacher-report assessments of depression measure generally uncorrelated constructs. Second-order analysis suggests that depression as a global construct is being measured to some degree by items from all three instruments. Canonical analysis was employed to identify items that best predicted CDI, PNID, and CBL-T summary scores simultaneously. Also, the relationship between specific items with similar content was investigated. Results from these analyses generally supported a conclusion that the three types of measures yield scores that are primarily independent and that the use of summary scores is not masking stronger relationships within measures. These findings have implications for clinical practice and construct elaboration.     

Is Anti-Semitism Currently Part of an Authoritarian Attitude Syndrome?

This study used data from the 1990 General Social Survey to investigate the extent to which anti-Semitism had syndromic relationships with other authoritarianism-related attitudes among American white non-Jews. The correlational and factor analytic connections between four measures of anti-Semitism and the other attitudes were generally weak. There were no clear-cut differences between respondents high and low in education in the strength of these connections. Moreover, when the scores of respondents favorable and unfavorable to Jews were compared on a number of authoritarianism-related scales, the differences were usually small. The results suggest a diminished role for anti-Semitism in authoritarian attitude syndromes.     

Extraversion,sensation seeking,stimulus screening and Type ‘A’ behaviour pattern: The relationship between various measures of arousal

Although the concept of arousal has led to the development of various psychological constructs, and instruments for measuring them, few attempts have been made to investigate the relationship between more than two of these measures in a moderately large heterogeneous population. This study set out to compare measures of extraversion, sensation seeking, stimulus screening and the Type A behaviour pattern. Subscale, as well as total scale, scores were intercorrelated. The results showed that all the measures correlated significantly positively but that the highest correlations were between the subscale scores on the various tests. The implications for individual-difference measurement are considered.     

Brief report: Relationship between performance testing and parent report of attention and executive functioning profiles in children following perinatal arterial ischemic stroke

Children with perinatal arterial ischemic stroke (PAIS) have increased rates of attention and executive functioning (EF) weaknesses. Research in other pediatric disorders has documented poor consistency between parent report of these skills and performance-based measures. We compared these data sources in children with PAIS. Forty full-term (≥37 weeks) children ages 3–16 (median = 7.2 years; 58% male) with PAIS completed neuropsychological testing and composite scores were created for seven attention and EF domains (Processing Speed; Attention; Working Memory; Verbal Retrieval; Inhibitory Control; Flexibility/Shifting; Planning). Parents completed “real-world” functioning questionnaires (ADHD Rating Scale-IV, BRIEF). Correlational analysis were used to compare parent and performance measures. Correlations between ADHD Rating Scale-IV scores and the performance-based Attention and Inhibition composite scores were nonsignificant. Significant negative correlations were found between the BRIEF GEC and performance-based Verbal Retrieval and Processing Speed composites, but remaining GEC/composite comparisons were nonsignificant. Analyses between parent report BRIEF index scores and the corresponding performance-based domain identified one significant negative correlation between the BRIEF Working Memory Index and the Working Memory composite score. While children with PAIS demonstrate difficulties in attention and EF on both parent report and performance measures, little significance was found in comparisons of these two types of measures. There may be several explanations for this dissociation: measures assessing different aspects of the same underlying construct; performance-based measures lacking ecological validity; and parents underestimating/underreporting their child’s deficits. Thus, multiple sources of informant and performance data are necessary to make more accurate conclusions about functioning in these domains.     

Subjective health complaints and health related quality of life in a population of health care workers

The aim of this study was to assess whether Subjective Health Complaints (SHC), demands and coping are associated with health-related quality of life in a population of health care workers. One hundred and nineteen employees in two nursing homes for the elderly filled in a questionnaire on health, exercise, psychological factors, and work conditions. Main outcome measures were SHC and quality of life measured by SF-36. High level of SHC was associated to low health-related quality of life. Low coping and high demands were related to low scores (low quality of life), and high coping and low demands to high scores on mental health. Pseudoneurological complaints (e.g. tiredness, sadness), high demands and low coping were associated with low mental health. The expected negative association between SHC and health-related quality of life was found. There was a positive association between coping and quality of life.