Longitudinal change in five cognitive abilities was investigated to determine if the direction or magnitude of change was related to the individual's ability level. Adults between 18 and 97 years of age performed three versions of 16 cognitive tests on two occasions separated by an average of 2.7 years. In order to control for influences associated with regression toward the mean, level of abil...

Assessing cognitive change in older adults is a common use of neuropsychological services, and neuropsychologists have utilized several strategies to determine if a change is "real," "reliable," and "meaningful." Although standardized regression-based (SRB) prediction formulas may be useful in determining change, SRBs have not been widely applied to older adults. The current study sought to dev...

It is widely recognized that experience with cognitive tests can influence estimates of cognitive change. Prior research has estimated experience effects at the level of groups by comparing the performance of a group of participants tested for the second time with the performance of a different group of participants at the same age tested for the first time. This twice-minus-once-tested method ...

Does personality change across the entire life course, and are those changes due to intrinsic maturation or major life experiences? This longitudinal study investigated changes in the mean levels and rank order of the Big Five personality traits in a heterogeneous sample of 14,718 Germans across all of adulthood. Latent change and latent moderated regression models provided 4 main findings: Fir...

positive role of niacin on serum lipid profile of rats treated with glucocorticoids (gcs) has been reported. this study aims to evaluate effect of niacin on bone changes in gc-induced dyslipidemic rats. a number of 28 growing rats divided into four groups and treated as control, methyl prednisolone (mp) group (3.5 mg/kg five days a week, sc); mpn group (mp + niacin 200 mg/kg/day orally) and mpa...

Aims: The aim of the current study is to evaluate effect Aloe Vera gel on healing process surgically made maxillary alveolar bone defects and new tissue formation in rabbits. Materials Methods: Twenty albino rabbits were randomly chosen conduct study, all selected inhabited under same circumstances involving ventilation, temperature, diet. Each rabbit received anesthetic solution separately und...

BACKGROUND Animal models of fracture consolidation are fundamental for the understanding of the biological process of bone repair in humans, but histological studies are rare and provide only qualitative results. The objective of this article is to present the histomorphometric study of the bone healing process using an experimental model of osteotomy in rabbit fibula without interference of sy...

This study aimed to evaluate the histological, histomorphometric and radiographic features of the bone repair in ovariectomized rats submitted to mandibular distraction osteogenesis. Thirty female Wistar rats were equally divided in ovariectomy and control group and submitted to mandibular distraction osteogenesis. After 7, 14 and 28 days the animals were sacrificed and mandibles were removed a...