Evidence for executive deficits among users of MDMA (Ecstasy)

Random letter generation and computation span are tasks known to load on executive, prefrontal resources. Previous research suggests that Ecstasy users are impaired on random letter generation. The current study, employing a larger sample (44 current Ecstasy users, and 59 non‐Ecstasy users), together with more effective statistical controls for other drug use, failed to replicate previous findings. Ecstasy users were unimpaired on all measures of random generation performance. A significant difference was obtained on the computation span measure, with Ecstasy users scoring significantly lower than non‐Ecstasy users. This difference remained statistically significant following control for various indicators of the use of other drugs including cannabis. The results are discussed in terms of the potential effects that Ecstasy might have on different component executive processes.     

Ecstasy Use,Outcome Expectancies,and Sexual Risk Taking

Ecstasy has become one of the most widely used illicit drugs in Australia. This study investigated outcome expectancies as possible motivating and maintaining factors in ecstasy use and sexual risk‐taking behaviour. A sample of regular ecstasy users (N = 220) from Sydney and Canberra, Australia, was recruited for structured face‐to‐face interviews. They also completed an Ecstasy Expectancy Questionnaire. Seven of eight subscales significantly differentiated regular users from non‐users. Interestingly, light and heavier users held similar outcome expectancies, except that light users endorsed items on the sexual enhancement subscale more strongly than heavier users. Further investigation showed that the level of sexual risk taking observed in this sample was high, with the majority of participants reporting multiple partners, “casual” sexual encounters, sex under the influence of substances, and inconsistent condom use. Using logistic regression analyses, a key finding was that positive sex‐related ecstasy outcome expectancies were associated with involvement in disinhibited sexual behaviour under the influence of ecstasy. These effects persisted after statistically controlling for the frequency of ecstasy use. The findings suggest that sexual risk taking is related not only to the disinhibiting properties of ecstasy but also to beliefs that users hold about the effects of the drug.     

A survey of the use of facilitated communication in community agencies serving persons with developmental disabilities

Service providers to individuals with developmental disabilities at seven North Dakota agencies were surveyed on their current and past use of facilitated communication (FC). Perceived validity and effectiveness of FC were also assessed. Seventeen percent of the 177 direct care and supervisory staff surveyed reported that they had never heard of FC, 36% were aware of but had never used FC, 28% had previously used FC, and 18% currently used the technique despite overwhelming experimental evidence that FC is not a valid means of communication for people with disabilities. The results indicated that respondents who had previously used FC, but did not do so currently, gave it the lowest ratings of validity, usefulness, and likability, while current users gave FC the highest ratings. Current users had the fewest years of experience in the field of developmental disabilities. The majority of current users said guardian approval should not be required prior to the use of FC, whereas the majority of past users and non-users said that guardian approval should be required. © 1998 John Wiley & Sons, Ltd.     

The short-term consequences of early onset cannabis use

The associations between early onset (prior to 15 years of age) cannabis use and rates of mental health or adjustment problems during the period from 15 to 16 years of age were studied in a New Zealand birth cohort. Early onset cannabis users were at increased risks of later substance use behaviors, conduct/oppositional disorders, juvenile offending, severe truancy, school dropout, anxiety, depression, and suicidal ideation. Early cannabis users had odds of these outcomes ranging from 2.7 to 30.8 times higher than the odds for those who did not use cannabis prior to age 15. Most of the elevated risks of early onset users were explained by the fact that they were a high-risk group of adolescents characterized by family disadvantages, early adjustment problems, and high affiliations with substance-using or delinquent peers. Nonetheless, even after adjustment for a wide range of confounding factors, early onset users had increased risks of later cannabis use. It is concluded that while most of the elevated risks of early onset users were explained by social, family, and individual characteristics of this group, early onset users were at increased risks of later cannabis use.This research was funded by grants from the Health Research Council of New Zealand, the National Child Health Research Foundation and the Canterbury Medical Research Foundation.     

Differential Effects of Ecstasy on Short-Term and Working Memory: A Meta-Analysis

Quantitative analysis of studies examining the effect of ecstasy on short-term and working memory in the verbal and visuo-spatial domain was undertaken. Thirty verbal short-term memory, 22 verbal working memory, 12 visuospatial short-term memory and 9 visuospatial working memory studies met inclusion criteria. Ecstasy users performed significantly worse in all memory domains, both in studies using drug-naïve controls and studies using polydrug controls. These results are consistent with previous meta-analytic findings that ecstasy use is associated with impaired short-term memory function. Lifetime ecstasy consumption predicted effect size in working memory but not in short-term memory. The current meta-analysis adds to the literature by showing that ecstasy use in humans is also associated with impaired working memory, and that this impairment is related to total lifetime ecstasy consumption. These findings highlight the long-term, cumulative behavioral consequences associated with ecstasy use in humans.     

The dark side of technologies: Technostress among users of information and communication technologies

This paper tests the structure and the predictors of two psychological experiences of technostress associated with the use of information and communication technologies (ICT), i.e., technostrain (users report feelings of anxiety, fatigue, scepticism and inefficacy beliefs related to the use of technologies) and technoaddiction (users feel bad due to an excessive and compulsive use of these technologies). The study included a sample of 1072 ICT users (N = 675 nonintensive ICT users and N = 397 intensive ICT users). Results from multigroup confirmatory factor analyses among non‐intensive and intensive ICT users showed, as expected, the four‐factor structure of technostrain in both samples. Secondly, and also as expected, confirmatory factorial analyses revealed that technostress experiences are characterized not only by technostrain but also by an excessive and compulsive use of ICT. Moreover, multiple analyses of variance showed significant differences between non‐intensive and intensive ICT users (1) in the dimensions of technostress and (2) in specific job demands and job/personal resources. Finally, linear multiple regression analyses revealed that technostrain is positively predicted by work overload, role ambiguity, emotional overload, mobbing and obstacles hindering ICT use, as well as by lack of autonomy, transformational leadership, social support, ICT use facilitators and mental competences. Work overload, role ambiguity and mobbing, as well as the lack of emotional competences, positively predict technoaddiction. Theoretical and practical implications, in addition to future research, are discussed.     

Cocaine and crack users compared

Because crack use is such a recent phenomenon, little is known about users of this highly addictive drug, the harmful effects of which have been widely publicized. This study hypothesized that crack users would be more depressed and more alienated from family, friends, and school staff than would cocaine users, and would consider as less important reasons not to use crack and cocaine. The authors compared 411 users of cocaine (but not crack) to 156 crack users, all but 22 of whom had also used cocaine. The sample was derived from a larger random survey of 7th- through 12th-grade students in North Carolina. Results indicated that crack users were younger than cocaine users, made poorer grades, were more depressed, and were more likely to be alienated from family and friends. However, cocaine and crack users were equally unlikely to confide in anyone in their school if they had a drinking or drug problem. Further, crack users were more likely to have talked once to a teacher or counselor in the past year about their problems. The implications of these seemingly inconsistent findings are explored. Crack users appear to be a particularly vulnerable population.     

Hearing test for a profoundly retarded human subject

A profoundly retarded 28-yr.-old female was trained to avoid an aversive but harmless shock to the foot by withdrawing the foot upon presentation of a visual cue. She was later unable to learn to avoid the shock consistently upon presentation of an auditory cue, confirming the ward staff's contention that she had a hearing disability. The audiometric technique using negative reinforcement bridges the problems of (1) difficulty in finding positive reinforcers for patients of low functioning and (2) satiation which may result from the continued use of positive reinforcers. The use of aversive stimuli raises ethical concerns. The growing trend in research is that aversive stimuli are permissible for individuals for whom positive techniques have not been effective and when used by trained professionals under careful review.     

Internalizing and Externalizing Problem Behavior: a Test of a Latent Variable Interaction Predicting a Two-Part Growth Model of Adolescent Substance Use

Externalizing symptoms robustly predict adolescent substance use (SU); however, findings regarding internalizing symptoms have been mixed, suggesting that there may be important moderators of the relationship between internalizing problems and SU. The present study used a longitudinal community sample (N?=?387, 55% female, 83% White) to test whether externalizing symptoms moderated the relationship between internalizing symptoms and trajectories of alcohol and marijuana use from early (age 11–12 years old) to late (age 18–19 years old) adolescence. Two-part latent growth models were used to distinguish trajectories of probability of use from trajectories of amount of use among users. Results suggested that externalizing symptoms moderated the association between internalizing symptoms and probability of alcohol, but not marijuana use. The highest probability of alcohol use was observed at high levels of externalizing symptoms and low levels of internalizing symptoms. A negative protective effect of internalizing symptoms on probability of alcohol use was strongest in early adolescence for youth high on externalizing symptoms. Although moderation was not supported for amount of use among users, both domains of symptomology were associated with amount of alcohol and marijuana use as first-order effects. High levels of externalizing symptoms and low levels of internalizing symptoms were associated with high levels of amount of use among users. These findings suggest that developmental models of substance use that incorporate internalizing symptomology should consider the context of externalizing problems and distinguish probability and amount of use.     

Swiss Adolescent Drug Users' and Nonusers' Optimism About Their Future1

Swiss adolescents, aged 16 to 17 years, were asked about their past drug use, their intended drug use, their optimism about their future health, their negative emotions, and their well-being. On the basis of their self-reports, they were divided into 3 types of drug users: nonusers, experimenters, and frequent users. Compared with nonusers, experimenters and frequent users reported low optimism and more negative feelings. Females reported more negative feelings and less psychological well-being than did males, but the genders did not differ regarding optimism. Logistic regression demonstrated that optimism about future health was a protective factor for the intention to use drugs. Students who perceived themselves as less vulnerable to harm had in the past not used drugs and intended not to accept drugs when given the occasion. The implications of the findings for prevention of drug use are discussed.     

Is the igeneration a ‘we’ generation? Social networking use among 9‐ to 13‐year‐olds and belonging

Research suggests that online communication is associated with increased closeness to friends and friendship quality. Children under 13 years of age are increasingly using social networking sites (SNSs), but research with this younger age group is scarce. This study examined the relationship between SNS use and feelings of belonging among children aged 9–13 years. A self‐report questionnaire was administered to 443 children (48.98% boys), asking about their SNS use and their sense of belonging to their friendship group. SNS users reported a stronger sense of belonging to their friendship group than non‐users, but this was found only among older boys. Furthermore, among boy SNS users, a positive linear relationship was found between the intensity of usage and feelings of belonging. No significant relationships were found for girls. These findings suggest that boys who use these sites are gaining friendship benefits over and above those boys who are non‐users or low‐intensity users. Longitudinal studies should investigate the causal relationships between SNS use and social effects within this age group.     

California Critical Thinking Disposition Inventory: further factor analytic examination

The stability of the factor structure of the California Critical Thinking Disposition Inventory was re-examined using a convenience sample of 800 undergraduate students from nursing (n=520 first bachelors' and n=185 second bachelors' students) and biology (n=95) enrolled in introductory courses in their majors at a 4-yr. mid-Atlantic public university. Ages ranged from 17 to 54 years (M = 23.0, SD = 5.9), with 92 men and 707 women (1 missing). 685 participants identified themselves as Euro-American, 65 as African American, 9 as Hispanic, 26 as Asian, and 11 as "Other" (4 missing). The inventory developed by Facione in 1994 is a 75-item, forced-choice, adjective checklist, yielding seven subscores and a total score assessing testees' disposition toward critical thinking. A principal components factor analysis did not replicate the original factor structure of seven factors but supported the stability of a four-factor structure which had emerged in previous work by Walsh and Hardy and by Kakai. When the 75 original items were reduced to 25, the explained variance for the inventory improved from 27% to 44.95%. Thus, further investigation and continued refinement is warranted.     

Coping profiles associated with psychiatric, physical health, work, and family problems

Compares the coping profiles of 11 samples (total N = 1,298) of individuals experiencing psychiatric, physical health, work, or family problems. Comparisons are made in individuals with and without anxiety and depression to control for the effects of distress. Coping was similar for samples in similar problem categories but different for samples in different categories. Psychiatric patients made more use of avoidance and less use of social supports than individuals in the other categories. Samples with physical health problems were among the most frequent users of social supports. Individuals with a family problem were among the most frequent users of problem-focused coping and the least frequent users of self-blame. Groups with work stress were the most frequent users of self-blame. These results suggest that coping profiles may be useful in describing and differentiating groups of stressed individuals.     

Phencyclidine use in delinquent males committed to a training school

Delinquent males committed to a training school were interviewed to determine the extent and the effects of phencyclidine use. Nine of 109 (8%) drug using subjects knowingly had used phencyclidine in the past. These nine subjects were multiple drug abusers of other substances and had started taking drugs at an average age of 9.38 years which was significantly younger than non PCP users. Six of the nine PCP users had committed proven offenses against persons and in four cases violent actions were directly attributed to PCP use. Suicide attempts were made by five (55%) of the PCP users which was significantly more frequent than suicide attempts made by non PCP users.     

Attitudes Toward Pre-implantation Genetic Diagnosis (PGD) for Genetic Disorders Among Potential Users in Malaysia

While pre-implantation genetic diagnosis (PGD) is available and legal in Malaysia, there is an ongoing controversy debate about its use. There are few studies available on individuals’ attitudes toward PGD, particularly among those who have a genetic disease, or whose children have a genetic disease. To the best of our knowledge, this is, in fact, the first study of its kind in Malaysia. We conducted in-depth interviews, using semi-structured questionnaires, with seven selected potential PGD users regarding their knowledge, attitudes and decisions relating to the use PGD. The criteria for selecting potential PGD users were that they or their children had a genetic disease, and they desired to have another child who would be free of genetic disease. All participants had heard of PGD and five of them were considering its use. The participants’ attitudes toward PGD were based on several different considerations that were influenced by various factors. These included: the benefit-risk balance of PGD, personal experiences of having a genetic disease, religious beliefs, personal values and cost. The study’s findings suggest that the selected Malaysian participants, as potential PGD users, were supportive but cautious regarding the use of PGD for medical purposes, particularly in relation to others whose experiences were similar. More broadly, the paper highlights the link between the participants’ personal experiences and their beliefs regarding the appropriateness, for others, of individual decision-making on PGD, which has not been revealed by previous studies.     

Concurrent alcohol and tobacco use among school-going adolescents in Namibia: Prevalence and risk factors

The aim of this study was to investigate the prevalence and risk factors for concurrent alcohol and tobacco use among school-going adolescents in Namibia. Data were from a sample of 4 531 Namibian middle school children (females = 53.1%; mean age = 15.8 years, SD = 1.8 years). They completed the Namibia Global School-based Student Health Survey (GSHS) in 2013. Overall, 74.4% of alcohol users in the past month were frequent tobacco users; whereas 40.5% of tobacco users in the past month were frequent alcohol users. Compared to students who were neither alcohol nor tobacco users (63.1%), concurrent alcohol and tobacco users were more likely to self-report with a lack of parent support, to have used illicit drugs, to have engaged in school truancy, to be sedentary in behaviour, to have engaged in a physical fight, and to have had two or more sexual partners. Substance use prevention and treatment programmes with adolescents should routinely address their risk for comorbid tobacco and alcohol use.     

Emotionally disturbed children in ordinary schools: Concepts, prevalence and management

Not all children in ordinary schools with emotional problems need intensive psychotherapy from specialists. The majority can be helped by class teachers who exercise extended pastoral care. Some others will need the help of a skilled worker trained and experienced in skills of individual counselling. But there area few children - a significant few - who do need specialised help. It may sometimes be possible for them to receive this help in the ordinary school, without removal to a special school or referral to some outside agency such as a Child Guidance Service, if use is made of a special adjustment unit. Some conceptual problems in relation to maladjustment are discussed; reference is made to national surveys indicating the prevalence of the problem in the school-child population; and a model of management for children in ordinary schools is outlined, based on work carried out in Bristol over the past seven years, with particular reference to special adjustment units.     

Prevalence of pathological Internet use among university students and correlations with self-esteem, the General Health Questionnaire (GHQ), and disinhibition.

Over the last few years, there has been increased interest in the addictive potential of the Internet. The current study was an attempt to replicate common findings in the literature and provide more evidence for the existence of Internet addiction among students--a population considered to be especially vulnerable. A total of 371 British students responded to the questionnaire, which included the Pathological Internet Use (PIU) scale, the General Health Questionnaire (GHQ-12), a self-esteem scale, and two measures of disinhibition. Results showed that 18.3% of the sample were considered to be pathological Internet users, whose excessive use of the Internet was causing academic, social, and interpersonal problems. Other results showed that pathological Internet users had lower self-esteem and were more socially disinhibited. However, there was no significant difference in GHQ scores. These results are discussed in relation to the methodological shortcomings of research in the area as a whole.     

Smartphone Use,Work–Home Interference,and Burnout: A Diary Study on the Role of Recovery

This diary study examines the impact of daily recovery experiences on daily work–home interference (WHI) and daily burnout symptoms within a group of smartphone users. A total of 69 employees using smartphones on the initiative of their employer completed a diary questionnaire on five successive workdays (N = 293 data points). We hypothesised that particularly for intensive smartphone users it would be important to engage in activities fostering psychological detachment and relaxation in order to reduce the risk of WHI. We predicted that smartphone use would be positively related to WHI. Finally, we predicted that the positive relationship between WHI and state levels of burnout would be stronger for intensive smartphone users. Overall, the results of multi‐level analyses supported these hypotheses. The findings emphasise the importance of a clear organisational policy regarding smartphone use during after‐work hours.     

Development of cognitive averaging: when light and light make dark

In two experiments we studied developmental changes in reasoning about intensive quantities. In contrast to previous studies, color--an intensive quantity that is readily perceivable--was chosen as stimulus material. Children between 6 and 12 years of age and adults predicted the mixture intensity of pairs of liquids with different intensities of red color, the liquid volumes in the two source glasses either being the same (Experiment 1) or different (Experiment 2). The data show that cognitive averaging in this domain develops late and slowly. An extensitivity bias, a strong tendency to use rules (adding in particular) that hold for extensive but not for intensive quantities, predominated up to the age of 12 years and was not totally absent in adults. Contrary to common expectation, children's use of the correct averaging rule became more likely when an extensive quantity, volume, was also varied and thus the task increased in complexity.