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The locking compression plate (LCP) system has several advantages in fracture fixation combining angular stability with the use of locking screws with traditional fixation techniques. However, the system is complex and requiring careful attention to biomechanical principles and good surgical technique. Due to the set of complicate stresses and strains in the LCP system after implantation, the material, which is being used here, is deemed important. However, so far the materials have been limited to the stainless steel (SS) or titanium (Ti). This study was therefore aimed at investigate the biomechanical performance of the internal tibial locked plates at different material properties, including SS, Ti, carbon/polyether ether ketone (PEEK) composite, in treating medial tibial fracture using patient-specific finite element (FE) model of the human tibia. The carbon/PEEK composite materials were used at three different fiber plies configurations. Simulated loading was applied at 6040 ratios on the mediallateral aspect. The model was fixed distally in all degrees of freedom. The results revealed the highest stress (307.10 MPa) and the lowest strain (0.14%) at Ti LCP system. The carbon/PEEK LCP system at configuration I and III showed low stress (∼60 MPa) and high strain (0.70%), which are suitable points for designing of an internal LCP system. On the other hand, the highest value of stress in callus region was 4.78 MPa (Carbon PEEK/Configuration I) and the strain variations of callus region were between 1.46% and 3.82% among all materials. These results implied the advantage of carbon/PEEK composite materials in LCP system as they can tolerate higher strains at lower stresses.There is limited evidence that patients with a personality disorder (PD) have poorer psychotherapy outcomes compared to those without, but the majority of these studies are from short-term and symptom-focused interventions. In contrast, the present study provided open-ended psychotherapy to a sample of patients (N = 370), half of which had a PD a pretreatment. The results revealed that patients with PD demonstrated equal symptomatic improvement and greater interpersonal improvement than patients without PD. Similarly, observer-rated diagnostic changes were equivalent across the two groups. The PD group needed significantly higher therapy doses to reach this level of change. Both groups demonstrated enduring improvements when assessed at a 2.5-year follow-up. However, patients with a PD at pretreatment were more likely to relapse and regain their Axis I clinical disorder during follow-up. The degree of personality pathology was positively related to magnitude of change. (PsycInfo Database Record (c) 2021 APA, all rights reserved).Reports an error in "I ain't no fortunate one On the motivated denial of class privilege" by L. Taylor Phillips and Brian S. Lowery (Journal of Personality and Social Psychology, Advanced Online Publication, Jun 18, 2020, np). In the article, in the Independent variables subsection of Experiment 6, the second paragraph is duplicated here in error. The correct location appears as the fourth paragraph of this subsection. All versions of this article have been corrected. (The following abstract of the original article appeared in record 2020-43040-001.) Invisibility makes privilege powerful. Especially when it remains unexposed, privilege perpetuates inequity by giving unearned advantages to certain groups over others. However, recent social movements (e.g., Occupy) attempt to expose class-based privilege, threatening its invisibility. Across 8 experiments, we show that beneficiaries of class privilege respond to such exposure by increasing their claims of personal hardships and hard work, to cover privilege in ffort on a difficult task. Overall, results suggest that even when those benefitting from class privileges are confronted with evidence of their "invisible knapsack," ideologies of personal merit help them cover the privileges of class once again. (PsycInfo Database Record (c) 2021 APA, all rights reserved).
To preserve or improve independent functioning in older adults and those with neurocognitive impairments, researchers and clinicians need to address prospective memory deficits. To be effective, prospective memory interventions must restore (or circumvent) the underlying attention and memory mechanisms that are impaired by aging, brain injury, and neurodegeneration. OTSSP167 We evaluated two decades of prospective memory interventions for efficacy, time/resource costs, and ecological validity.
We systematically reviewed 73 prospective memory intervention studies of middle- to older-aged healthy adults and clinical groups (N = 3,749). We also rated the ecological validity of each study's prospective memory assessment/task using a newly developed scale. When possible (72% of studies), we estimated effect sizes using random-effects models and Hedges' g.
We identified four categories of prospective memory interventions, including mnemonic strategy, cognitive training, external memory aid, and combination interventioe, and broaden implementation in daily life. (PsycInfo Database Record (c) 2021 APA, all rights reserved).
Older persons living with HIV (PLWH) disease commonly experience failures of time-based prospective memory (PM) in their daily lives. This study examined the benefits of providing strategic supports at encoding, monitoring, and cue detection for naturalistic time-based PM among older PLWH.
Participants included 116 older PLWH and 48 seronegatives who completed a baseline neuropsychological evaluation (see Woods et al., 2020), including a laboratory PM experiment that paralleled the design of the current naturalistic study. The naturalistic time-based PM task required participants to press a button on a portable PM response box 4 times per day for 1 month. PLWH were randomly assigned to an unsupported control condition or to an experimental group in which strategic processing was supported at encoding (implementation intentions and visualization), monitoring (content-free cuing), and/or cue detection (auditory alarm). The seronegative participants were all assigned to the unsupported control group.
In a model adjusting for age and affective disorders, PLWH who received all three supports in combination demonstrated moderately better naturalistic time-based PM accuracy as compared with PLWH controls. Both the cue detection and combination conditions were associated with markedly more precise response timing on the naturalistic time-based PM task. Supported PM accuracy as measured in the laboratory was positively associated with naturalistic PM accuracy among PLWH in the experimental groups.
Providing strategic supports to enhance the cue salience of naturalistic time-based PM tasks may improve both the accuracy and timing with which older PLWH remember to perform time-based intentions. (PsycInfo Database Record (c) 2021 APA, all rights reserved).
Providing strategic supports to enhance the cue salience of naturalistic time-based PM tasks may improve both the accuracy and timing with which older PLWH remember to perform time-based intentions. (PsycInfo Database Record (c) 2021 APA, all rights reserved).
Increasing evidence points to mild alterations in everyday functioning early in the course of Alzheimer's disease and related dementias (ADRD), despite prior research suggesting functional declines occur primarily in later stages. However, daily function assessment is typically accomplished with subjective self- or informant-report, which can be prone to error due to various factors. Performance-based functional assessments (PBFAs) allow for objective evaluation of daily function abilities, but little is known on their sensitivity to the earliest ADRD-related brain alterations. We aimed to determine the neural correlates of three different PBFAs in a pilot study.
A total of 40 older participants (age = 70.9 ± 6.5 years; education = 17.0 ± 2.6 years; 51.5% female; 10.0% non-White; 67.5% cognitively normal) completed standardized PBFAs related to medication management (MM), finances (FIN), and communication abilities (COM). Participants underwent diffusion tensor imaging (DTI) scans, from which mean fractioe, these results are consistent with growing evidence that performance-based functional assessments may be a useful tool in identifying early changes related to ADRD. (PsycInfo Database Record (c) 2021 APA, all rights reserved).Empathy encompasses the ability to contemplate and vicariously share in the emotional life of others, and is critical for social interaction, and may enhance subjective happiness.
While a few theoretical models propose that executive function may play a role in empathy, it is unknown how variation in executive function, and underlying variation in key large-scale brain network nodes, such as the dorsolateral prefrontal cortex node within the executive control network-or the medial prefrontal cortex (PFC) node within the mentalizing/theory of mind network-may account for individual differences in empathy capacity.
The relationship between individual differences in executive capacity-parsed into working memory, inhibition, and cognitive flexibility subdomains-and magnitude of activity in a priori identified PFC subregions during a functional MRI-based ecologically valid empathy induction paradigm, was investigated. Empathic happiness (i.e., vicarious joy) and empathic concern (i.e., vicarious sadness) in resecuneus) predicted greater empathy capacity. (PsycInfo Database Record (c) 2021 APA, all rights reserved).
Subjective cognitive decline (SCD) is an important area of research within older populations, for whom prospective memory (PM) functions as a crucial part of daily life. Little is known about change in PM, following reports of SCD. This study examines longitudinal naturalistic PM in older adults with high and low levels of SCD.
Ninety-nine community-dwelling older adults were revisited after 5 to 6 years, to examine the role of baseline SCD (measured as reported memory decline from young adulthood) on episodic and habitual PM change. Episodic PM was measured by the message task and habitual PM by a time-stamped button-pressing task across 2 weeks.
SCD status was not associated with episodic PM, with performance declining over time across both groups, η2 = .03, 95% CI [.11, .61]. Conversely, for habitual PM, there was a significant Group × Time interaction, η2 = .07, 95% CI [-.95, -.06], with people reporting high SCD demonstrating better baseline performance and declining over time, whereas low SCD remained stable.
Older adults with SCD demonstrated greater decline in habitual PM, suggesting these tasks may be more sensitive to the effects of SCD. (PsycInfo Database Record (c) 2021 APA, all rights reserved).
Older adults with SCD demonstrated greater decline in habitual PM, suggesting these tasks may be more sensitive to the effects of SCD. (PsycInfo Database Record (c) 2021 APA, all rights reserved).
The use of Internet-based technology (IBT) is an important component of everyday living. However, persons with multiple sclerosis (MS) may face barriers to use. This study aimed to compare IBT perceived use and skills and actual performance in persons with MS and healthy controls (HCs). In addition, it aimed to examine IBT perceptions as a unique predictor of IBT performance beyond demographic, cognitive, motor, and affective factors in persons with MS.
Ninety-six persons with MS and 65 HCs aged 18 to 65 completed self-report and performance-based IBT measures along with assessments of cognition, motor function, and affect at a single time point.
The MS group reported perceptions of less IBT use and poorer skills than HCs and demonstrated worse IBT performance as per accuracy and speed on the Actual Reality. In persons with MS, IBT perceptions and performance were significantly associated. Cognition and dexterity were significantly associated with IBT performance, and anxiety was associated with IBT perceptions.
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