Do Left-Handed Older Adults Have Superior Visual Memories?

Lindell, Annukka K.

doi:10.1177/00315125231185166

Cited by 3 publications

(1 citation statement)

References 39 publications

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“…The left hemisphere, which controls the right hand in the vast majority of right-handed people, is frequently associated with linguistic and logical tasks. This specialization for verbal processing, a crucial aspect of working memory, may account for the superior performance of right-handed people [9]. However, handedness is not a strictly binary phenomenon.…”

Section: Working Memory and Handednessmentioning

confidence: 99%

Whether and How Handedness Affects Individuals Cognitive Performance? A Literature Review

Li,

Xu,

Lian

et al. 2024

LNEP

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This literature review article aimed to compile research published in recent years regarding the relationship between bodily habits, specifically handedness, and cognitive performance in memory, attention, and information processing. The article contains three chapters, discussing each aspect separately with a collection of studies and evaluations. The article is able to combine results from studies and form a model graph specialized for studies summaries. Through the synthesis of investigations, handedness seemed to have some relationship with cognition. To be more precise, ICH individuals (those people with mixed hands) have the capacity to create a connection between brain hemispheres, which enhances their performance in memory tests and allows them to better integrate divergent information. In addition, people tend to focus more on their dominant hands; this can affect a persons attention to things happening around them. Lastly, right-handed people performed better in generic cognition tests, and cross-activation of brain lateralization has been demonstrated.

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Section: Working Memory and Handednessmentioning

confidence: 99%

Whether and How Handedness Affects Individuals Cognitive Performance? A Literature Review

Li,

Xu,

Lian

et al. 2024

LNEP

View full text Add to dashboard Cite

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No Incidental Memory Advantage for Mixed Handed vs. Consistent Right Handed Participants: Conflicting Results From Earlier Research

Johansen,

Rusten,

Westerhausen

2024

Percept Mot Skills

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Individuals who vary their preferred hand when performing different types of manual activities, so-called mixed handers (MH), have been frequently reported to outperform individuals with a consistent (right) hand preference (cRH) on tasks assessing declarative-memory functions. For example, in one influential study, this MH advantage extended to incidental learning from presumed “deep” semantic processing of verbal stimuli but not from “shallow” phonemic or structural processing. In the present study, we aimed to replicate this research finding in two separate participant samples. First, in a pre-registered and sample-size planned experiment we confronted 49 participants (23 MH; 26 cRH) with “phonemic” and “semantic” word evaluation tasks (using a within design), followed by a surprise delayed recognition test. In a second experiment, we repeated the same procedure with 65 other participants (31 MH, 34 cRH). A mixed-effect analyses of variance found a significant main effect of Encoding Condition (phonemic vs. semantic tasks) in both experiments (effect size: η p 2 = .81 to .85), indicating the classical level-of processing effect with higher recognition hits and sensitivity ( d’) for words that followed semantic versus phonemic encoding. However, the predicted interaction effect of Encoding Condition with Handedness Group was not statistically significant for either sample (all η p 2 < .03), nor was the main effect of Handedness Group. Thus, our findings conflicted with those of the original study in two independent samples. As we had sufficient statistical power to be confident in our failure to detect a genuine group difference, we cannot confirm the previously reported MH over cRH advantage in incidental learning of verbal material. We discuss possible reasons for these contradictory results and the theoretical implications of this discovery.

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Investigation of 50 g Oral Glucose Challenge Test Efficacy in Pregnant with and Without Risk Factors in Gestational Diabetes Screening

Ergenc,

Ozdemir

2024

Haseki

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Who should be screened for gestational diabetes mellitus (GDM) is still a matter of debate. This study was to investigate the results of administering the 50 g oral glucose loading test to pregnant women with risk factors for GDM instead of all pregnant.Methods: In this retrospective study, pregnant women were divided into two groups according to whether they had at least one of these risk factors. Eighty-four pregnant women had no risk factor for gestational diabetes, while 120 of the 204 pregnant women had at least one risk factor. The 50 and 100 g oral glucose challenge test (OGCT) results were recorded. The prevalence of GDM and predictive values of OGCT were statistically analyzed. Results:The positive predictive value of 50 g OGCT was 20% for pregnant women without risk factors and 48.39% for pregnant women with at least one risk factor. The difference between these two groups was statistically significant. Conclusion:The positive predictive value of 50 g of OGCT in pregnant women without risk factors was 20%, whereas that in pregnant women with at least one of the risk factors was 48.39%, a statistically significant difference. According to our study, if a selective population is screened, 2.38% of pregnant women without risk factors will not be diagnosed. Therefore, we emphasize the importance of universal screening.

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Do Left-Handed Older Adults Have Superior Visual Memories?

Cited by 3 publications

References 39 publications

Whether and How Handedness Affects Individuals Cognitive Performance? A Literature Review

Whether and How Handedness Affects Individuals Cognitive Performance? A Literature Review

No Incidental Memory Advantage for Mixed Handed vs. Consistent Right Handed Participants: Conflicting Results From Earlier Research

Investigation of 50 g Oral Glucose Challenge Test Efficacy in Pregnant with and Without Risk Factors in Gestational Diabetes Screening

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