Foot Performance of Right- and Left-Handers: A Question of Environmental Influence

1995 ◽  
Vol 80 (2) ◽  
pp. 671-674 ◽  
Author(s):  
Carl Gabbard ◽  
Susan Hart
Keyword(s):  
Environmental Influence ◽  
Hand Preference ◽  
Adequate Explanation ◽  
Driving Experience ◽  
Left Hand ◽  
Left Handed ◽  
Right Hand ◽  
Theoretical Perspectives ◽  
The Difference ◽  
The Right

Prior research has shown that right-handed adults perform better on a speed-tapping task with the right hand and right foot, while left-handers execute more rapidly with the left hand and right foot. Speculation is that environmental influence, most likely driving experience, may account for the right-foot bias. To examine this hypothesis further, 48 young right- and left-handed children were tested on a similar protocol. Analyses indicated no significant differences in foot performance within hand-preference groups. Since these findings do not complement reports for adults, factors such as experience or maturation might contribute to the difference. Were patterns similar, the effect of environmental influence would be assumed to be small. However, much more evidence is needed before an adequate explanation can be developed. The issue of possible environmental influence is discussed from various theoretical perspectives.

scholarly journals Refinements of the Lower Bounds of the Jensen Functional

2011 ◽  
Vol 2011 ◽  
pp. 1-13 ◽  
Author(s):  
Iva Franjić ◽  
Sadia Khalid ◽  
Josip Pečarić
Keyword(s):  
Lower Bounds ◽  
Jensen Inequality ◽  
Left Hand ◽  
Right Hand ◽  
Special Cases ◽  
Jensen Functional ◽  
The Difference ◽  
The Right

The lower bounds of the functional defined as the difference of the right-hand and the left-hand side of the Jensen inequality are studied. Refinements of some previously known results are given by applying results from the theory of majorization. Furthermore, some interesting special cases are considered.

scholarly journals Hand Preference and Creativity of Papua University Student

2022 ◽  
Vol 8 (1) ◽  
pp. 257-262
Author(s):  
Vionita Putri ◽  
Elda Irma Jeanne Joice Kawulur ◽  
Febriza Dwiranti ◽  
Sabarita Sinuraya ◽  
Sita Ratnawati
Keyword(s):  
Hand Preference ◽  
University Student ◽  
Creative People ◽  
Left Hand ◽  
Adjective Check List ◽  
Left Handed ◽  
Males And Females ◽  
Papua Barat ◽  
The Right ◽  
Descriptive Method

Human has a preference to use their hands for various manual activities. Left-handed preference is people who tend to use their left hand to perform various manual activities, while right-handed people tend to use right-handed. Any researches show that the left-handed preference for more creativity was influenced by the dominant use of the right brain and bigger corpus callosum. The research aims to determine the percentage of left-handed preference and their creativity in Universitas Papua, Manokwari Papua Barat. The method used in this research is the descriptive method. Data collection used a questionnaire to evaluate individual hand preference using Handedness Questionnaire and to determine individual creativity using Adjective Check List. The percentage of left-handed people in UNIPA were 9.3% or lower than right-handed and higher than ambidextrous. Our study supports the statement about selection in handedness in the traditional society which showed a higher percentage of left-hander as advantages related to using hand intensively.  The percentage of left-handed males and females was almost equal and strongly left-handed was higher in females. The percentage of creative people was higher in left-handed, especially in males

Left-Handed Theology and Inclusiveness

Horizons ◽  
1990 ◽  
Vol 17 (2) ◽  
pp. 207-216
Author(s):  
Gordon Jensen
Keyword(s):  
Theology Of The Cross ◽  
Left Hand ◽  
Left Handedness ◽  
Left Handed ◽  
Right Hand ◽  
The Cross ◽  
The Right

AbstractIn the concern for inclusiveness, one area that has been largely neglected is the discrimination against left-handedness. This paper looks briefly at some of the scriptural and social stigmas and implications attached to left-handedness. Using Luther's theology of the cross as its basis, a left-handed theology is introduced. Arguing for the need for a theology which focuses on those who are marginalized, a left-handed theology offers a model whereby God's left hand offers to those who are in “minority” positions grace and solidarity. This is contrasted to the right hand of God, which portrays a God of power, strength, and triumphalism. The hand of God which one chooses to relate to determines, then, how one does theology, and how a theological inclusiveness is developed.

Effects of ipsilateral and crossed eye-hand dominance on catching performance in prepubescents

2017 ◽  
Vol 4 (5) ◽  
pp. 41-48
Author(s):  
M. Akif Ziyagil ◽  
Inci Kesilmiş ◽  
Nevzat Demirci ◽  
M. Melih Kesilmiş
Keyword(s):  
Physical Activity ◽  
Hand Dominance ◽  
Mean Values ◽  
Left Hand ◽  
Left Handed ◽  
Eye Dominance ◽  
Right Hand ◽  
Significant Difference ◽  
The Mean ◽  
The Right

This study investigates the effects of ipsilateral and crossed hand-eye dominance on one and both hands catching performance (OHCP and BHCP) in participants aged 10 to 13 years. The combined groups including hand and eye dominance consisted of right handed-right eyed (RHRE), right handed-left eyed (RHLE), left handed-left eyed (LHLE) and left handed-right eyed (LHRE), respectively. In this study the mean values were only higher in the favor of LHLE females in left hand OHCP from 2 and 3 m distances. In other side, LHLE males had a higher mean values not only in left hand OHCP from 2 and 3 meters but also in the right hand OHCP from 3 meters. No significant difference was observed in BHCP among four groups in both genders. In conclusion, ipsilateral handeye dominance is an advantage for OHCP compared to cross dominance. Also left side had an advantage compare to the right side in OHCP. Keywords: Hand dominance; physical activity; gender.

scholarly journals Conventional right handed laryngoscope blade used as left handed blade: an experience with a case of mass in right side of oral cavity

2016 ◽  
Vol 3 (1) ◽  
pp. 38-40
Author(s):  
Bashu Dev Parajuli ◽  
Trishant Limbu
Keyword(s):  
Difficult Airway ◽  
Fibreoptic Intubation ◽  
Neck Region ◽  
Laryngoscope Blade ◽  
Left Hand ◽  
Left Handed ◽  
Right Hand ◽  
Airway Pathology ◽  
Patient Cooperation ◽  
The Right

Approach to management of anticipated difficult airway depends upon difficulty anticipated and availability of resources (expertise and instruments). Awake fibreoptic intubation is the preferred method to secure an anticipated difficult airway. However, availability of the instrument, expertise to use and patient cooperation should be considered. A conventional right handed laryngoscope blade can’t be negotiated when the airway pathology involves part or whole of the right side, compressing the airway structures towards the left. In such cases, a left-handed laryngoscope blade helps to displace the tongue and the right-sided lesion to provide an unobstructed left sided view of the larynx. Here we describe a case of difficult airway with mass in right side of the neck region with tracheal deviation to left, for which right handed conventional laryngoscope blade could not be inserted due to extension of mass up to the right side of the tongue. On the second attempt, the usual right hand laryngoscope blade was held on right hand and inserted from the left side displacing the tongue to right side and bougie held in left hand was used to guide tracheal intubation.

scholarly journals II. The inheritance of sinistrality in Limnæa peregra ( Mollusca, Pulmonata )

1931 ◽  
Vol 219 (462-467) ◽  
pp. 51-131 ◽  
Keyword(s):  
Fresh Water ◽  
Mirror Image ◽  
Left Hand ◽  
Left Handed ◽  
The Difference ◽  
The Right

Limncea peregra is one of the commonest British fresh-water molluscs. Like other aquatic Pulmonates, it is hermaphrodite and breeds either by self- or cross-fertilisation. Normally the shell and body are coiled in a right-handed spiral (“dextral”) . Very rarely a reversed (“sinistral”) form occurs in which the whole symmetry is completely inverted : the shell and body are coiled in a left-handed spiral, the heart and kidney are reversed ; the rectum, penis and vagina open on the left-hand side of the neck instead of the right; the osphradium is on the left and the consequent asymmetry of the nervous ganglia is reversed. A sinistral snail is a complete mirror image of a dextral. The difference involves the whole development of each individual : it is apparent in the first division of the egg and obvious in the second. To be twisted either to the right or to the left seem to be the only available morphological possibilities. A shell which is not dextral is not necessarily sinistral, nor vice versa ; the shells might be coiled on the flat, something like a Planorbis . We have had a few of these monsters (fig. 8, Plate 10), of which the animals have been sinistral : if fertile they have normal dextral or sinistral young and appear to play no particular part in the genetic scheme. But a spiral mode of cleavage in the egg and a spiral twist in the soft parts of the adult seem to be essential qualities of gastropod mollusca, and an animal which is neither dextral nor sinistral is presumably impossible : the twist being obligatory there is no third alternative.

An Analysis of Finger Pinch Strength in Children

1986 ◽  
Vol 30 (7) ◽  
pp. 667-671
Author(s):  
Sheik N. Irarhan
Keyword(s):  
Handgrip Strength ◽  
Ring Finger ◽  
Middle Finger ◽  
Pinch Strength ◽  
Maximal Strength ◽  
Strength Data ◽  
Left Hand ◽  
Right Hand ◽  
The Difference ◽  
The Right

This study examined 3 types of pinch strength and handgrip strength among children between the ages of 5.3 and 7.9 years. Maximal strength of four pulp pinches, the chuck pinch and the lateral pinch were measured as well as maximal handgrip strength. Data analysis showed that the chuck and lateral pinched were the strongest while the pulp pinch with the little finger was the weakest. The pulp pincnes with the index and with the middle finger were stronger than that with the ring finger. Males were slightly stronger than females, the difference being only 13%. The right hand pinches were not significantly stronger than left hand pinches, the difference being only 5%. The major hand of subjects with dominant left hand was only 84% as strong as the major hand of subjects with dominant right hand. Pinch strength increased with age by 50% for a 2.6 year difference.

A Lower Incidence of Left-Handed Writing among Young Adults in Bulgaria than in the USA

2000 ◽  
Vol 90 (1) ◽  
pp. 121-122 ◽  
Author(s):  
Richard Pollard
Keyword(s):  
United States ◽  
Young Adults ◽  
Lower Incidence ◽  
The United States ◽  
Left Hand ◽  
Left Handed ◽  
Right Hand ◽  
The Usa ◽  
Low Incidence ◽  
The Right

The incidence of left-handed writing among 590 young Bulgarian adults was 6.4%, significantly lower than that reported in two studies of students in the United States. Of those writing with the right hand, 10.8% stated that they had been forced to change their preferred hand for writing. The parents of the Bulgarian sample had a similar low incidence of left-handed writing (5.9%). Left-handed writing was almost three times more likely if one or both of the parents wrote with the left hand.

scholarly journals Timucua Hand Use: Dispelling the Myth of Left-Hand Preference

2021 ◽  
Vol 1 (2) ◽  
Author(s):  
George Aaron Broadwell
Keyword(s):  
Hand Preference ◽  
Universal Property ◽  
Left Hand ◽  
Central Florida ◽  
Right Hand ◽  
Linguistic Evidence ◽  
The Right

At the time of Spanish contact, the Timucua were the original people of northern central Florida. Granberry (1996) claimed in a provocative article that Timucua constitutes an exception to the universal or near-universal property of preference for the right hand, and showed a preference for the left hand instead. This article critically examines Granberry's argument, and shows that there is no good linguistic evidence to support left-hand preference in Timucua

scholarly journals Clinical performance on dental mannequin and perceived clinical learning experience of left handed students at Kulliyyah of Dentistry, International Islamic University Malaysia

2016 ◽  
Vol 15 (1) ◽  
Author(s):  
Bo Bo Ko ◽  
Kais Raid ◽  
Tin Myo Han
Keyword(s):  
Clinical Performance ◽  
Body Position ◽  
Learning Experience ◽  
P Value ◽  
Clinical Learning ◽  
Left Hand ◽  
Group 4 ◽  
Left Handed ◽  
Right Hand ◽  
The Right

Introduction: Dental equipments are ergonomically designed for the right handed people. Hence left handed students have to adapt to use their right hands with their body position while treating the patients. Methods: It was a cross sectional comparative study. Ten left handed students and ten right handed students were invited for this study. The participants were randomly divided into 4 groups. They were assigned to do class I cavity preparation with the buccal extension and amalgam filling on the artificial tooth 36 on the dental mannequin. Group (1) the right handed students who worked from the right side of the mannequin with the right hand (n=10), group (2) the left handed students who worked from the right side of the mannequin with the right hand (n=10), group (3) the left handed students who worked from the right side of the mannequin with the left hand (n=10) and group (4) the left handed students who worked from the left side of the mannequin with the left hand (n=10). The quality of the cavity and amalgam filling were scored by the expert who had been blinded. Data were statistically analyzed by ANOVA test. The perceived clinical learning experience of left handed students was also evaluated by self administered questionnaires by using likert scales. Results: Mean score of clinical performance on the dental mannequins showed highest in group (4), P value =0.004. Conclusions: Left handed students should be allowed to work up to their hand preference and position

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