The Impact of Handedness, Sex, and Cognitive Abilities on Left–Right Discrimination: A Behavioral Study

Constant, Martin; Mellet, Emmanuel

doi:10.3389/fpsyg.2018.00405

Cited by 9 publications

(9 citation statements)

References 51 publications

(107 reference statements)

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“…Females tend to outperform males in most memory tasks [23]. However, this is a complex dynamic, as recent research suggests that sex may interact with handedness on cognition, with reduced brain lateralization in women explaining lower cognition in select cognitive parameters [24]. Relatedly, in a large cross-sectional study of older adults and based on grip strength, left-handed women scored worse than right-handed women in immediate and delayed memory [12].…”

Section: Introductionmentioning

confidence: 99%

Handedness, Grip Strength, and Memory Function: Considerations by Biological Sex

et al. 2019

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Background and Objective: The objective of this study was to evaluate the potential independent and interactive effects of handedness and grip strength on episodic memory function, and whether biological sex moderated these relationships. Materials and Methods: 162 young adults (Mage = 20.7 years) completed a series of memory assessments including a subjective memory complaint evaluation and several objective measures of memory. Handedness (i.e., left-hand dominant, inconsistent handedness (ICH), and right-hand dominant) was evaluated using the Edinburgh Handedness Inventory. Handgrip strength was determined from a handgrip dynamometer. Results: When compared to ICH individuals, retrospective memory scores were statistically significantly worse for left-handed (p = 0.02) and right-handed (p = 0.03) individuals. Higher grip strength was statistically significantly associated with fewer retrospective memory complaints (b = 0.10, 95% CI: 0.01, 0.19, p = 0.04). Conclusions: The present study provides some suggestive evidence that ICH (inconsistent handedness) and greater grip strength are associated with fewer retrospective memory complaints. However, we did not observe any evidence of an interaction effect of handedness and grip strength on memory, and similarly, biological sex did not interact with these parameters to influence memory.

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Section: Introductionmentioning

confidence: 99%

Handedness, Grip Strength, and Memory Function: Considerations by Biological Sex

et al. 2019

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“…Left-handed mail participants were found performing the Bergen left-right discrimination better than right-hander males, however this was sex-depended effect while the effect of handedness was found insignificant in the total number of male and female participants [20]. No difference in the left right discrimination between the left-handed and right-handed people was found in other studies as well [21][22][23][24].…”

Section: Introductionmentioning

confidence: 70%

Left-handers, retrained left-handers and right-handers: A comparative study

Makashvili¹,

Elene²,

Tamar³

et al. 2020

World J. Adv. Res. Rev.

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Present study was aimed at further extension of the scientific data concerning the influence of retraining in left-handers as well as concerning some disabilities ascribed to the left-handedness. Study participants filled in the questionnaire about the incidence of fears and depression, bedwetting and stuttering, spatial confusion, complaints on weak memory and attention. Responses were analyzed regarding the handedness of the respondents, qualified as left-hander, righthander and retrained left-hander. The number of reports on bedwetting and slowness in writing, as well as on spatial left/right confusion was found higher in left-handers as compared to right-handers. The number of reports on fears was found higher in retrained left-handers. Left-handers, retrained left-handers and right-handers did not differ in the number of reports on stuttering, depression, week memory and not sustained attention. Mental rotation task performance was studied in another group of left-handed and right-handed participants. Handedness was determined by the test on hand performance. Left-handers were found to make more mistakes in mental rotation task performance as compared to right-handers. We conclude that expectancy of bedwetting, slowness in writing and mental spatial left/right confusion is higher in left-handers as compared to right-handers. Retraining of left-handers is suggested to cause fears, however it is not related to stuttering, depression, slowness in reading and writing, worsening of memory and attention. Stuttering is equally expectable among left-handers, retrained left-handers and right-handers.

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“…Generally, people have right-hemispheric spatial dominance and left-hemispheric language dominance, but left-handed or ambidextrous people may have atypical lateralization ( Szaflarski et al, 2002 ). Our studies included only right-handed participants as previous studies suggested that left-handed people had advantage ( Constant and Mellet, 2018 ) or disadvantage ( Hannay et al, 1990 ) in right-left discrimination compared to right-handers. We may be able to reveal whether and how handedness affects right-left discrimination by considering the two processes and cortical lateralization.…”

Section: Discussionmentioning

confidence: 99%

“…All participants reported no history of neurological and psychiatric illness. We analyzed data from the 98 participants who reported they were right-handed to control potentially confounding effect of handedness ( Hannay et al, 1990 ; Constant and Mellet, 2018 ). Written informed consent was obtained from each participant.…”

Section: Studymentioning

confidence: 99%

Visual and Verbal Processes in Right-Left Confusion: Psychometric and Experimental Approaches

Tagami

Imaizumi

2021

Front. Psychol.

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Errors in discriminating right from left, termed right-left confusion, reflect a failure in translating visuospatial perceptions into verbal representation of right or left (i.e., visuo-verbal process). There may also be verbo-visual process, where verbal cues are translated into visual representations of space. To quantify these two processes underlying right-left confusion, Study 1 investigated the factor structure of the Right-Left Confusability Scale, which assesses daily experiences of right-left confusion. Exploratory factor analysis suggested that these two processes and another factor reflecting mental rotation underlie right-left confusion. Study 2 examined correlations between the (sub)scale scores and performance on orientation judgment tasks reflecting visuo-verbal and verbo-visual processes. Overall, self-reported measures were not associated with the behavioral performances presumably reflecting the two processes. These results suggest that the cognitive mechanisms underlying right-left confusion can be classified into visuo-verbal and verbo-visual processes and mental rotation, although their psychometric and behavioral indices might be distinct. Further studies may develop better assessments of right-left confusion reflecting these processes.

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The Impact of Handedness, Sex, and Cognitive Abilities on Left–Right Discrimination: A Behavioral Study

Cited by 9 publications

References 51 publications

Handedness, Grip Strength, and Memory Function: Considerations by Biological Sex

Handedness, Grip Strength, and Memory Function: Considerations by Biological Sex

Left-handers, retrained left-handers and right-handers: A comparative study

Visual and Verbal Processes in Right-Left Confusion: Psychometric and Experimental Approaches

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