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981.
This study investigated whether the age-related positivity effect strengthens specific event details in autobiographical memory. Participants retrieved past events or imagined future events in response to neutral or emotional cue words. Older adults rated each kind of event more positively than younger adults, demonstrating an age-related positivity effect. We next administered a source memory test. Participants were given the same cue words and tried to retrieve the previously generated event and its source (past or future). Accuracy on this source test should depend on the recollection of specific details about the earlier generated events, providing a more objective measure of those details than subjective ratings. We found that source accuracy was greater for positive than negative future events in both age groups, suggesting that positive future events were more detailed. In contrast, valence did not affect source accuracy for past events in either age group, suggesting that positive and negative past events were equally detailed. Although ageing can bias people to focus on positive aspects of experience, this bias does not appear to strengthen the availability of details for positive relative to negative past events. 相似文献
982.
983.
Long KA Thomas SB Grubs RE Gettig EA Krishnamurti L 《Journal of genetic counseling》2011,20(6):572-592
Research among African-Americans indicates this population perceives sickle cell (SCD) to be a serious disease and sickle
cell trait (SCT) screening an important intervention. However, studies have consistently demonstrated a lower than desired
uptake of SCD education, inadequate knowledge regarding personal and family trait status, and a low perceived susceptibility
of giving birth to a child with the disease. We examined general attitudes and beliefs regarding genetics and genetic testing
including prenatal testing and newborn screening; we used this information as the foundation to more specifically assess attitudes
and beliefs regarding SCD and perceived barriers to SCD education and awareness. Thirty-five African-American adult men and
women participated in one of four focus groups. Thematic analysis identified that both prenatal testing and newborn screening
are acceptable forms of genetic testing. Based largely on their personal experiences, participants possessed an understanding
of the natural progression of SCD but had a limited understanding of the inheritance and probable risk of giving birth to
a child with the disease. Barriers to education and greater awareness of SCD were classified as personal, familial, and societal.
Community based interventions focused on sharing the stories of individuals with first-hand experiences with SCD should be
considered. 相似文献
984.
Sarah Monakes Yvonne Garza Van Wiesner III Richard E. Watts 《Journal of Addictions & Offender Counseling》2011,31(2):94-107
The purpose of this phenomenological study was to understand the perceptions of adult male substance offenders who experienced sand tray therapy as an adjunct to their cognitive behavioral rehabilitative treatment. Results indicate a positive experience for participants. Implications for counselors are discussed. 相似文献
985.
Serial-position curves for targets in short-term recognition memory show modest primacy and marked recency. To construct serial-position
curves for lures, we tested orthographic neighbours of study words and assigned each lure to the position of its studied neighbour.
The curve for lures was parallel to that for targets. In Experiment 2, only half the lures were neighbours of study words; the other half overlapped a study word by a single letter. The serial-position
curve for neighbours of study items was now flatter than the curve for targets. The results are inconsistent with theories
in which any factor that benefits targets must hinder lures. Instead, they demand a decision mechanism that assigns a role
to item-specific information, as well as to general familiarity information, such as dual-process theory. 相似文献
986.
Van der Jeugd A Ahmed T Burnouf S Belarbi K Hamdame M Grosjean ME Humez S Balschun D Blum D Buée L D'Hooge R 《Neurobiology of learning and memory》2011,95(3):296-304
We evaluated various forms of hippocampus-dependent learning and memory, and hippocampal synaptic plasticity in THY-Tau22 transgenic mice, a murine tauopathy model that expresses double-mutated 4-repeat human tau, and shows neuropathological tau hyperphosphorylation and aggregation throughout the brain. Focussing on hippocampus, immunohistochemical studies in aged THY-Tau22 mice revealed prominent hyper- and abnormal phosphorylation of tau in CA1 region, and an increase in glial fibrillary acidic protein (GFAP) in hippocampus, but without signs of neuronal loss. These mice displayed spatial, social, and contextual learning and memory defects that could not be reduced to subtle neuromotor disability. The behavioral defects coincided with changes in hippocampal synaptic functioning and plasticity as measured in paired-pulse and novel long-term depression protocols. These results indicate that hippocampal tauopathy without neuronal cell loss can impair neural and behavioral plasticity, and further show that transgenic mice, such as the THY-Tau22 strain, might be useful for preclinical research on tauopathy pathogenesis and possible treatment. 相似文献
987.
A two-mode clustering method to capture the nature of the dominant interaction pattern in large profile data matrices 总被引:1,自引:0,他引:1
Profile data abound in a broad range of research settings. Often it is of considerable theoretical importance to address specific structural questions with regard to the major pattern as included in such data. A key challenge in this regard pertains to identifying which type of interaction (double ordinal, mixed ordinal/disordinal, double disordinal) most adequately fits the major pattern in a profile data set at hand. In the present article a novel methodology is proposed to deal with this challenge. This methodology is based on constrained and unconstrained versions of a recently introduced 2-mode clustering model, the real-valued hierarchical classes model. The methodology is illustrated using empirical Person × Situation profile data on altruism. 相似文献
988.
Reeb-Sutherland BC Fifer WP Byrd DL Hammock EA Levitt P Fox NA 《Developmental science》2011,14(5):1134-1141
Although infants display preferences for social stimuli early in their lives, we know relatively little about the mechanisms of infant learning about the social world. In the current set of studies, 1-month-old infants underwent an adapted eyeblink conditioning paradigm to examine learning to both 'social' and non-social cues. While infants were asleep, they were presented with either a 'social' stimulus (a female voice) or one of two non-social stimuli (tone or backward voice) followed by an airpuff presented to the eyelid. Infants in the experimental groups displayed increased learning across trials, regardless of stimulus type. However, infants conditioned to the 'social' stimulus showed increased learning compared to infants conditioned to either of the non-social stimuli. These results suggest a mechanism by which learning about the social world occurs early in life and the power of ecologically valid cues in facilitating that learning. 相似文献
989.
Charles A. Scherbaum Victoria Blanshetyn Elizabeth Marshall-Wolp Elizabeth McCue Ross Strauss 《Social Psychology of Education》2011,14(3):361-375
This study examines the relationship between stereotype threat and individual test-taking behaviors. Previous research has
examined the impact of stereotype threat on test scores, but little research has examined the impact of stereotype threat
on the test-taking behaviors impacting those scores. Using a pre-post experimental design, stereotype threat was manipulated
and test-taking behaviors (e.g., time spent per item, response changes) were measured while completing verbal ability items
before and after the manipulation. The results indicated that stereotype threat minimally impacted time-related test-taking
behaviors, but did impact behaviors related to response changes. Implications of the findings are discussed. 相似文献
990.
McFarland CP Glisky EL 《Neuropsychology, development, and cognition. Section B, Aging, neuropsychology and cognition》2011,18(6):633-652
Prospective memory (PM) among older adults has been shown to be influenced by frontal lobe (FL) function. An implementation intention (e.g., 'if situation X occurs, I will do Y') is a mnemonic strategy that may be particularly beneficial for individuals with low-FL function, as it has been suggested that implementation intentions produce heightened accessibility to environmental cues, and automatic triggering of previously formed intentions. The present study investigated the effectiveness of implementation intentions among 32 older adults characterized as possessing high- or low-FL function. Participants were placed into one of two conditions: Read-Only or Implementation Intentions, before being tested on a laboratory prospective memory task. Results indicated that older adults with high-FL composite scores demonstrated better PM than those with low-FL scores, and that those who made implementation intentions outperformed those who simply read task instructions. Of particular interest is the finding that high-FL participants benefited from implementation intentions, suggesting that implementation intentions may improve PM of all older adults regardless of FL function. Theoretical underpinnings of implementation intentions are discussed in the context of FL function. 相似文献