Planting a misdiagnosis of Alzheimer's disease in a person's mind

Objective: There is an extensive corpus of knowledge about how misinformation may distort autobiographical memories. A diagnostic error can be conceptualised as a form of misinformation. Methods: The authors discuss the case of a 58-year-old woman who was given a misdiagnosis of Alzheimer's disease. Results: The patient was deeply convinced that the diagnosis was correct, even when she was confronted with contradictory evidence. Conclusion: A diagnosis is not a neutral piece of information. It profoundly affects the lives of patients. The consequences of a misdiagnosis may be similar to persistent false memories

Who is the better eyewitness? Sometimes Adults but at Other Times Children

Suggestibility is regarded as a major issue when children testify in court. Many legal professionals and memory researchers view children as inferior witnesses. Although differences exist between children and adults in suggestibility, these are much more complex than is usually assumed. We show that under certain conditions, adults are more susceptible to suggestion and false memories than children. We demonstrate that age-related shifts in suggestibility and false memory appear contingent on how fast and automatic children and adults make associations when experiencing events. Specifically, when confronted with suggestive information about a related, but non-experienced detail, adults more frequently than children, automatically generate links between items experienced and those already in memory making them more susceptible to suggestion than children

The effects of symptom overreporting on PTSD treatment outcome

Background: It is often assumed that individuals with posttraumatic stress disorder (PTSD) who overreport their symptoms should be excluded from trauma-focused treatments. Objective: To investigate the effects of a brief, intensive trauma-focused treatment programme for ndividuals with PTSD who are overreporting symptoms. Methods: Individuals (n = 205) with PTSD participated in an intensive trauma-focused treatment programme consisting of EMDR and prolonged exposure (PE) therapy, physical activity and psycho-education. Assessments took place at pre- and post-treatment (Structured Inventory of Malingered Symptomatology; SIMS, Clinician Administered PTSD Scale for DSM-5; CAPS-5). Results: Using a high SIMS cut-off of 24 or above, 14.1% (n = 29) had elevated SIMS scores (i.e. ‘overreporters’). The group of overreporters showed significant decreases in PTSDsymptoms, and these treatment results did not differ significantly from other patients. Although some patients (35.5%) remained overreporters at post-treatment, SIMS scores decreased significantly during treatment. Conclusion: The results suggest that an intensive trauma-focused treatment not only is a feasible and safe treatment for PTSD in general, but also for individuals who overreport their symptoms

Dissociative symptoms and sleep parameters: an all-night polysomnography study in patients with insomnia

AbstractBackgroundDissociative disorders encompass a range of symptoms varying from severe absent-mindedness and memory problems to confusion about one's own identity. Recent studies suggest that these symptoms may be the by-products of a labile sleep–wake cycle.MethodsIn the current study, we explored this issue in patients suffering from insomnia (N=46). We investigated whether these patients have raised levels of dissociative symptoms and whether these are related to objective sleep parameters. Patients stayed for at least one night in a specialized sleep clinic, while sleep EEG data were obtained. In addition, they completed self-report measures on dissociative symptoms, psychological problems, and sleep characteristics.ResultsDissociative symptom levels were elevated in patients suffering from insomnia, and were correlated with unusual sleep experiences and poor sleep quality. Longer REM sleep periods and less time spent awake during the night were predictive of dissociation.ConclusionsThis is the first study to show that insomnia patients have raised dissociative symptom levels and that their dissociative symptoms are related to objective EEG parameters. These findings are important because they may inspire sleep-related treatment methods for dissociative disorders

The link between dissociative tendencies and hyperassociativity

Background and objectives: Anecdotal and research evidence suggests that individuals with dissociative symptoms exhibit hyperassociativity, which might explain several key features of their condition. The aim of our study was to investigate the link between dissociative tendencies and hyperassociativity among college students. Methods: The study (n = 118) entailed various measures of hyperassociativity, measures of dissociative tendencies, depressive experiences, unusual sleep experiences, cognitive failures, and alexithymia. Results: We found a positive association between dissociative experiences (i.e., depersonalization) and hyperassociativity specific for associative fluency and associative flexibility tasks (including neutral and valenced material), but not for a remote association task. We also found tentative evidence for cognitive failures and alexithymia explaining the link between hyperassociativity and daytime dissociation and nighttime unusual sleep experiences. Limitations: Limitations include the use of hyperassociation tasks limited to verbal associations vs. imagistic associations, the lack of a measure of trauma history, and a sample limited to college students. Conclusion: Our study reports a link between depersonalization and hyperassociativity on tasks that allow for free associations across different semantic domains, potentially explained by alexithymia and cognitive failures. This finding may, with replication, open the pathway to applied intervention studies

The Privatization Origins of Political Corporations: Evidence from the Pinochet Regime

We show that the sale of state owned firms in dictatorships can help political corporations to emerge and persist over time. Using new data, we characterize Pinochet’s privatizations in Chile and find that some firms were sold underpriced to politically connected buyers. These newly private firms benefited financially from the Pinochet regime. Once democracy arrived, they formed connections with the new government, financed political campaigns, and were more likely to appear in the Panama Papers. These findings reveal how dictatorships can influence young democracies using privatization reforms

Skirting the Issue: What Does Believing in Repression Mean?

We show that, in contrast to Brewin, Li, Ntarantana, Unsowrth, and McNeilis (2019), large proportions of laypersons believe in the scientifically controversial phenomenon of unconscious repressed memories. We provide new survey data showing that when participants are asked specific questions about what they mean when they report that traumatic memories can be repressed, most provide answers strongly consistent with unconscious repression. Our findings continue to show that researchers, legal professionals, and clinicians should be wary of invoking unconscious repression in their work. (PsycInfo Database Record (c) 2020 APA, all rights reserved).</p