Poor Memory Confidence Mediates the Association between Inattention Symptoms and Hoarding Severity and Impairment

Exploring the relationship between dispositional mindfulness and hoarding behavior: A moderated multi-mediation model

Hoarding behavior may not only interfere with hoarders’ daily lives but may also endanger the community. However, few studies have investigated the role of personality characteristics in hoarding behavior. We hypothesized that dispositional mindfulness would be negatively associated with hoarding behavior, and tested mechanisms and gender differences in this association. An online survey was conducted in a sample of 533 Chinese adults (262 women, Mage = 26.82; SD = 6.30). Regression-based analyses showed that mindfulness was associated with less hoarding behavior through higher self-esteem and lower emotion dysregulation. Moreover, gender moderated the mediating effect of emotion dysregulation in the association between mindfulness and hoarding behavior. Specifically, the indirect association was only significant for women. These findings provide a deeper understanding of how, why, and for whom dispositional mindfulness is negatively associated with hoarding behavior, they provide support for self-completion theory and the cognitive-behavioral model of hoarding, and they have heuristic value for future research.

Cognitive impairment in hoarding disorder: a systematic review

OBJECTIVE

In the present study, we aimed to perform a systematic review evaluating the cognitive performance of patients with hoarding disorder (HD) compared with controls. We hypothesized that HD patients would present greater cognitive impairment than controls.

METHODS

A systematic search of the literature using the electronic databases MEDLINE, SCOPUS, and LILACS was conducted on May 2020, with no date limit. The search terms were "hoarding disorder," "cognition," "neuropsychology," "cognitive impairment," and "cognitive deficit." We included original studies assessing cognitive functioning in patients with HD.

RESULTS

We retrieved 197 studies initially. Of those, 22 studies were included in the present study. We evaluated 1757 patients who were 41 to 72 years old. All selected studies comprised case-control studies and presented fair quality. Contrary to our hypothesis, HD patients showed impairment only in categorization skills in comparison with controls, particularly at confidence to complete categorization tasks. Regarding attention, episodic memory, working memory, information-processing speed, planning, decision-making, inhibitory control, mental flexibility, language, and visuospatial ability, HD patients did not show impairment when compared with controls. There is a paucity of studies on social cognition in HD patients, although they may show deficits. The impact of emotion in cognition is also understudied in HD patients.

CONCLUSION

Except for categorization skills, the cognitive performance in HD patients does not seem to be impaired when compared with that in controls. Further work is needed to explore social cognition and the impact of emotion in cognitive performance in HD patients.

Subjective cognitive complaints and objective cognitive impairment in hoarding disorder

Individuals with Hoarding Disorder (HD) frequently complain of problems with attention and memory. These self-identified difficulties are often used as justification for saving and acquiring behaviors. Research using neuropsychological measures to examine verbal and visual memory performance and sustained attention have reported contradictory findings. Here we aim to determine the relationship between self-reported problems with memory and attention, objective memory and attention performance, and self-reported depression and anxiety symptoms in HD. Data was available for 319 individuals who participated in a treatment study of HD. Multiple regression was used to assess the relationship between self-reported complaints and objective measures, with age, education, and measures of depression and anxiety included as covariates. We found no association between self-reported memory difficulties and objective verbal or visual memory performance. Self-reported problems with attention were associated with objective attentional performance, although this relationship was partially accounted for by anxiety symptom severity. There was a small association between visual memory performance at baseline and improvements in hoardingrelated functional abilities following treatment. Improvements in subjective memory complaints pre-to-post treatment were associated with improvements in hoarding symptom severity and hoarding-related functioning. These results demonstrate a dissociation between perceived and objective functioning in HD.

Cognitive performance of individuals with animal hoarding

BACKGROUND

The purpose of this study was to characterize the cognitive performance of individuals with animal hoarding.

METHODS

This is a cross-sectional study, in which 33 individuals between the ages of 29 to 84 (M = 61.39; SD = 12.69) with animal hoarding have been assessed. The participants completed a neurocognitive battery including measures of general cognitive functioning, visual memory and organization, verbal fluency, and verbal reasoning.

RESULTS

Data suggest that individuals with animal hoarding have high rates of cognitive deficits related to visual memory and verbal reasoning.

CONCLUSIONS

Based on the performance tests used, we can suggest the existence of cognitive difficulties related especially to the executive functions of individuals with animal hoarding in this sample.

Recent Advances in Research on Hoarding

PURPOSE OF REVIEW

The purpose of the following paper is to review recent literature trends and findings in hoarding disorder (HD). Our goal is to highlight recent research on etiology, associated features, and empirically based treatments.

RECENT FINDINGS

Recent literature has added support for cognitive differences as a risk factor for HD; however, there is evidence that individuals with HD may overestimate their level of cognitive impairment. Several associated features have been highlighted in recent studies, including emotion regulation, intolerance of uncertainty and distress intolerance, and attachment. Finally, several psychotherapeutic treatments for hoarding have been recently validated, including group-based therapy and treatments using the cognitive-behavioral model. Although recent research demonstrates that hoarding can be effectively treated with available psychotherapeutic modalities, the effectiveness of current treatments is not as robust as that for other psychiatric disorders and more work is needed in treatment precision.