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The effect of sleep on novel word learning in healthy adults: A systematic review and meta-analysis.Psychonomic Bulletin & Review Dec 2021There is increasing evidence to indicate that sleep plays a role in language acquisition and consolidation; however, there has been substantial variability in... (Meta-Analysis)
Meta-Analysis Review
There is increasing evidence to indicate that sleep plays a role in language acquisition and consolidation; however, there has been substantial variability in methodological approaches used to examine this phenomenon. This systematic review and meta-analysis aimed to investigate the effect of sleep on novel word learning in adults, and explore whether these effects differed by retrieval domain (i.e., recall, recognition, and tests of lexical integration). Twenty-five unique studies met the inclusion criteria for the review, and 42 separate outcome measures were synthesized in the meta-analysis (k = 29 separate between-group comparisons, n = 1,396 participants). The results from the omnibus meta-analysis indicated that sleep was beneficial for novel word learning compared with wakefulness (g = 0.50). Effect sizes differed across the separate domain-specific meta-analyses, with moderate effects for recall (g = 0.57) and recognition memory (g = 0.52), and a small effect for tasks which measured lexical integration (g = 0.39). Overall, the results of this meta-analysis indicate that sleep generally benefits novel word acquisition and consolidation compared with wakefulness across differing retrieval domains. This systematic review highlights the potential for sleep to be used to improve second-language learning in healthy adults, and overall provides further insight into methods to facilitate language development.
Topics: Adult; Humans; Mental Recall; Recognition, Psychology; Sleep; Verbal Learning; Wakefulness
PubMed: 34549375
DOI: 10.3758/s13423-021-01980-3 -
Journal of the Academy of... 2021People living with inflammatory bowel disease (IBD) are exposed to multiple risk factors for cognitive impairment and frequently report cognitive difficulties. However,... (Meta-Analysis)
Meta-Analysis
BACKGROUND
People living with inflammatory bowel disease (IBD) are exposed to multiple risk factors for cognitive impairment and frequently report cognitive difficulties. However, the presence of cognitive impairment in IBD has not been systematically reviewed.
METHODS
Following Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines, we performed a systematic multidatabase search for cross-sectional and longitudinal studies comparing adults with IBD versus healthy controls for domain-specific cognitive function or scores on multidomain cognitive screening tools. For any domain reported by 3 or more studies, we conducted random-effects meta-analysis to calculate the standardized mean difference between groups; lower scores reflected poorer performance. Between-study heterogeneity was assessed using the I statistic and study quality assessed using an IBD-modified Newcastle-Ottawa scale.
RESULTS
Of 8302 articles screened, 12 studies (n = 687) were included in the qualitative synthesis and 11 in meta-analyses. All studies were cross-sectional. Studies generally excluded people with active IBD and older adults. Despite no significant differences on multidomain screening tools such as the Mini Mental State Examination (-0.27 [95% confidence interval -0.68, 0.08], P = 0.14), people with IBD showed significant deficits compared with healthy controls in attention (standardized mean difference -0.36 [-0.60, -0.12], P = 0.003, I = 0%), executive function (standardized mean difference -0.45 [-0.77, -0.13, P = 0.005, I = 42.5%), and specifically in working memory (standardized mean difference -0.58 [-0.85, -0.30], P < 0.001, I = 0%). Deficits in learning and recall were nonsignificant (P = 0.089) and other domains insufficient for meta-analysis.
CONCLUSIONS
People with IBD show deficits in attention and executive function, particularly in working memory, suggesting that cognitive impairment is a potential extraintestinal manifestation of IBD.
Topics: Aged; Cognition; Cognitive Dysfunction; Executive Function; Humans; Inflammatory Bowel Diseases; Learning
PubMed: 34219654
DOI: 10.1016/j.psym.2020.10.002 -
Neuroscience and Biobehavioral Reviews Jun 2024Changes in sleep and dreams are often observed during pregnancy. Dreaming may represent privileged access to the inner world of individuals, providing relevant... (Review)
Review
Changes in sleep and dreams are often observed during pregnancy. Dreaming may represent privileged access to the inner world of individuals, providing relevant information about their well-being. For this reason, a growing but heterogeneous literature has investigated dream experiences of pregnant women. The present paper aimed to systematically review the available evidence on the relationship between pregnancy and oneric activity, focusing on dream and nightmare frequency, dream contents, and emotional features. Moreover, dream changes between pre-partum and post-partum periods and the impact of previous pregnancy-related adverse events on dreaming have been summarized. Overall, 17 studies have been examined. The reviewed evidence suggests that women tend to have an abundant production of dreams and nightmares during pregnancy, and some results support the view that a high rate of dream recall is associated with poor sleep quality. Most studies have shown a high presence of pregnancy-related dream content, likely reflecting waking experiences and concerns. Additionally, dreaming may promote psychological preparation and activation of functional coping strategies to face life changes after childbirth.
PubMed: 38852848
DOI: 10.1016/j.neubiorev.2024.105763 -
Clinical Psychology & Psychotherapy Sep 2021Psychological interventions often use guided discovery and other techniques for diagnostic exploration and intervention planning. This way, memories may arise in the... (Review)
Review
Psychological interventions often use guided discovery and other techniques for diagnostic exploration and intervention planning. This way, memories may arise in the person, which may be true or false. False memories of earlier events can be harmful and result in real suffering, similar to actual traumatic memories. Based on cognitive psychological and psycho-traumatological findings, there is pronounced dissent in the academic disciplines regarding the conceptualization, relevance and research of false memories. This review contributes to the basic question of how often false beliefs and false memories may be induced within the frame of different interactional techniques. A systematic review has been conducted of 59 articles from (quasi-)experimental studies and two qualitative sources from 30 data bases. Three main methods of memory induction provide the basis for reporting: imagination inflation, false feedback, and memory implantation. Due to the conceptual and methodological diversity of the studies, the results appear to be heterogeneous. Free and guided imagery, as well as suggestive statements, could induce false beliefs or false memories in, on average, 20%-50% of the participants who underwent experimental manipulation concerning false past events. A false belief induction may occur after dream interpretation or hypnosis in more than 50% of participants. Personalized suggestion is more effective in inducing memory than the general plausibility of the suggested events. Further research questions are which therapeutic actions seem appropriate in cases of harmful false memories. This depends not only on whether there are veridical elements in the false memory but also on the quality and meaning of the memory for the person's life and ability to cope with burdens.
Topics: Humans; Laboratories; Memory; Mental Recall; Repression, Psychology; Suggestion
PubMed: 33586291
DOI: 10.1002/cpp.2567 -
PloS One 2022We conducted a scoping systematic review with respect to how consumer engagement with interactive advertising is evaluated and if interactive features influence consumer...
We conducted a scoping systematic review with respect to how consumer engagement with interactive advertising is evaluated and if interactive features influence consumer recall, awareness, or comprehension of product claims and risk disclosures for informing regulatory science. MEDLINE, PsycINFO, Business Source Corporate, and SCOPUS were searched for original research published from 1997 through February 2021. Two reviewers independently screened titles/abstracts and full-text articles for inclusion. Outcomes were abstracted into a structured abstraction form. We included 32 studies overall. The types of interactive ads evaluated included website banner and pop up ads, search engine ads, interactive TV ads, advergames, product websites, digital magazine ads, and ads on social network sites. Twenty-three studies reported objective measures of engagement using observational analyses or laboratory-based experiments. In nine studies evaluating the association between different interactivity features and outcomes, the evidence was mixed on whether more interactivity improves or worsens recall and comprehension. Studies vary with respect to populations, designs, ads evaluated, and outcomes assessed.
Topics: Advertising; Community Participation; Consumer Behavior; Disclosure; Health Education; Humans; Mental Recall
PubMed: 35113964
DOI: 10.1371/journal.pone.0263339 -
Neuroscience and Biobehavioral Reviews Oct 2022Accelerated Long-term Forgetting (ALF) is a memory deficit characterised by normal retention up to relatively short intervals (e.g., minutes, hours) with increased... (Review)
Review
Accelerated Long-term Forgetting (ALF) is a memory deficit characterised by normal retention up to relatively short intervals (e.g., minutes, hours) with increased forgetting over longer periods (e.g., days, weeks). ALF is often underestimated due to a lack of common memory assessments beyond 30-60 min. The purpose of this review was to provide an overview of ALF occurrence in neurodegenerative disorders, evaluating whether it can be considered a cognitive deficit useful for diagnosing and monitoring patients. We included 19 experimental studies that investigated ALF in neurodegenerative disorders. Most papers were focused on Alzheimer's disease (AD) dementia and related forms of cognitive decline (Mild Cognitive Impairment, Subjective Cognitive decline, Pre-symptomatic subjects at risk of AD dementia). The major finding of the present work concerns the presence of ALF in very early forms of cognitive decline related to AD. These findings, supporting the hypothesis that ALF is a subtle and undetected hallmark of pre-clinical AD, highlights the importance of investigating forgetting over a longer period and devising standardised measures to be included in clinical practice.
Topics: Alzheimer Disease; Cognition Disorders; Epilepsy; Humans; Memory Disorders; Mental Recall; Neuropsychological Tests
PubMed: 35961382
DOI: 10.1016/j.neubiorev.2022.104815 -
Trends in Psychiatry and Psychotherapy 2020The experience of stressful events can alter brain structures involved in memory encoding, storage and retrieval. Here we review experimental research assessing the...
INTRODUCTION
The experience of stressful events can alter brain structures involved in memory encoding, storage and retrieval. Here we review experimental research assessing the impact of the stress-related hormone cortisol on long-term memory retrieval.
METHOD
A comprehensive literature search was conducted on PubMed, Web of Science and PsycNet databases with the following terms: "stress," "long-term memory," and "retrieval." Studies were included in the review if they tested samples of healthy human participants, with at least one control group, and with the onset of the stress intervention occurring after the encoding phase and shortly (up to one hour) before the final memory test.
RESULTS
Thirteen studies were included in the qualitative synthesis (N = 962) and were classified according to the time elapsed between stress induction and memory retrieval (stress-retrieval delay), the stress-inducing protocol (stressor), the time of day in which stress induction took place, sex, and age of participants. Most studies induced stress with the Trier Social Stress Test (TSST) between 15 and 25 minutes before the final memory (mostly recall) test and showed significant increases in cortisol levels and memory impairment.
DISCUSSION
The reviewed studies indicate that stress does impair retrieval, particularly when induced with the TSST, in the afternoon, up to 45 minutes before the onset of the final memory test, in healthy young men. These results may inform future research on the impact of stress-induced cortisol surges on memory retrieval.
Topics: Humans; Memory, Long-Term; Mental Recall; Stress, Psychological
PubMed: 33084805
DOI: 10.1590/2237-6089-2019-0077 -
Memory (Hove, England) Aug 2022Self-defining memories (SDMs) are important for identifying one's purpose in life, achieving goals, and overcoming challenging situations. Individual studies have...
BACKGROUND
Self-defining memories (SDMs) are important for identifying one's purpose in life, achieving goals, and overcoming challenging situations. Individual studies have demonstrated differences in the characteristics of SDMs between clinical and non-clinical populations. This systematic literature review aimed to summarise and compare SDM characteristics among those with mental, substance use, cognitive, neurodevelopmental, and physical health challenges.
METHODS
Peer-reviewed English-language studies were included if they evaluated SDMs in these groups.
RESULTS
Thirty-five studies (N = 3123) were included. SDM content across all clinical populations tended to focus on illness themes. SDMs were generally less specific and integrated in those with mental health or substance use disorders as compared to non-clinical populations. SDM specificity and integration findings were more mixed in those with cognitive, neurodevelopmental, and physical health challenges.
CONCLUSIONS
Specific differences emerged between groups of individuals which may be related to illness characteristics, recovery trajectory, and individual differences in the ability to understand and process difficult life events.
Topics: Cognition; Humans; Memory, Episodic; Mental Health; Mental Recall; Self Concept; Substance-Related Disorders
PubMed: 35220886
DOI: 10.1080/09658211.2022.2042565 -
Journal of Psychiatry & Neuroscience :... 2022Reconsolidation impairment using propranolol is a novel intervention for mental disorders with an emotional memory at their core. In this systematic review and... (Meta-Analysis)
Meta-Analysis
BACKGROUND
Reconsolidation impairment using propranolol is a novel intervention for mental disorders with an emotional memory at their core. In this systematic review and meta-analysis, we examined the evidence for this intervention in healthy and clinical adult samples.
METHODS
We searched 8 databases for randomized, double-blind studies that involved at least 1 propranolol group and 1 placebo group. We conducted a meta-analysis of 14 studies ( = 478) in healthy adults and 12 studies in clinical samples ( = 446).
RESULTS
Compared to placebo, reconsolidation impairment under propranolol resulted in reduced recall of aversive material and cue-elicited conditioned emotional responses in healthy adults, as evidenced by an effect size (Hedges ) of -0.51 ( = 0.002, 2-tailed). Moreover, compared to placebo, reconsolidation impairment under propranolol alleviated psychiatric symptoms and reduced cue-elicited reactivity in clinical samples with posttraumatic stress disorder, addiction or phobia ( = -0.42, = 0.010).
LIMITATIONS
Methodological differences between studies posed an obstacle for identifying sources of heterogeneity.
CONCLUSION
Reconsolidation impairment is a robust, well-replicated phenomenon in humans. Its clinical use is promising and deserves further controlled investigation.
Topics: Adrenergic beta-Antagonists; Adult; Emotions; Humans; Mental Recall; Propranolol; Randomized Controlled Trials as Topic
PubMed: 35361699
DOI: 10.1503/jpn.210057 -
Journal of Affective Disorders Jun 2024Effective learning strategies are crucial to the development of academic skills and information retention, especially in post secondary education where increasingly... (Review)
Review
BACKGROUND
Effective learning strategies are crucial to the development of academic skills and information retention, especially in post secondary education where increasingly complex subjects are explored. Active recall-based strategies have been identified as particularly effective for long-term learning. This systematic review investigates the effectiveness of various active recall-based learning strategies for improving academic performance and self-efficacy in higher education students.
METHODS
A systematic review of peer-reviewed articles was conducted with a priori criteria by searching PubMed, ScienceDirect, JSTOR, PsycInfo, and Web of Science databases. Search results were screened/extracted and reconciled by two independent authors with the use of a piloted screening tool. Included studies were assessed for quality and risk of bias using the GRADE Quality Assessment Tool for Quantitative Studies. Three overarching study strategies were extracted for further investigation including flashcards, practice testing or retrieval practice, and concept mapping. Within each category, three additional unique search strings were searched, screened, and extracted. A qualitative analysis of the studies was provided.
RESULTS
Among the appraised articles, flashcards were found to be popular and correlated with higher GPA and test scores. Self-testing, retrieval practice, and concept mapping were also effective but under-utilized. Concept mapping was found to boost student confidence.
CONCLUSION
Active recall strategies exhibit promise for effective learning and additional research in these developing field can support academic pursuits.
Topics: Humans; Young Adult; Academic Success; Learning; Students; Mental Recall
PubMed: 38461899
DOI: 10.1016/j.jad.2024.03.010