Protocol - Hand Dominance - 12 Years and Older
Protocol Name from Source:
Edinburgh Handedness Inventory
The protocol consists of questions to determine which hand the participant uses for a series of activities.
The following protocol is part of a personal interview in which the participant reports on his/her own hand usage. Young Adult and Adult handedness is assessed using an 11-item scale. Please indicate your preferences in the use of hands in the following activities by putting a 1 in the appropriate column (for right only, left only, or both hands) for each item that you use.
4. Hold a racquet
5. Clean teeth
7. Strike a match
8. Use an eraser
9. Deal cards
10. Thread a needle
11. Cut food with a knife
Scoring: The participant indicates use by a "1" in the appropriate column (for right, left, or both) for each item that an adult uses. Add the "1"s in each column to get a total for that column. The sum of all three column totals is the cumulative total. To calculate the score: 100 x (right total - left total)/cumulative total. Handedness is then classified as follows:
|Less than -40||left-handed|
|Greater than or equal to -40 and less than 40||mixed-handed|
|Greater than or equal to 40||right-handed|
Personnel and Training Required
The trained interviewer should be able to administer a questionnaire and be able to probe for information as necessary.
|Average time of greater than 15 minutes in an unaffected individual||No|
|Specialized requirements for biospecimen collection||No|
Mode of Administration
Adolescent, Adult, Senior
October 1, 2015
Dominance is measured to assess the movement, mobility, and flexibility of an individual to determine which side of the body the study subject favors or the strength of hand activity.
This measure is used to determine which hand is dominant or more skilled for fine motor tasks than the other. Of the general population, about 90% have right hand dominance, about 10% have left hand dominance, and about 1% are mixed-handed or can use either hand interchangeably to complete a fine motor task (Porac & Coren, 1981). Hand dominance is thought to be influenced by genetics, and loci for relative hand skill have been mapped.
The Edinburgh Handedness Inventory was selected because of the detail of the activities that are performed.
|Common Data Elements (CDE)||Preference Hand Laterality||2180147||CDE Browser|
|Logical Observation Identifiers Names and Codes (LOINC)||Hand dom- 12Y proto EHI||56101-9||LOINC|
Process and Review
The [link[phenx.org/node/62|Expert Review Panel #1]] reviewed the measures in the Anthropometrics, Diabetes, Physical Activity and Physical Fitness, and Nutrition and Dietary Supplements domains.
Guidance from the ERP includes:
Revised description of measure
Back-compatible: no changes to Data Dictionary
Previous version in Toolkit archive ([link[www.phenxtoolkit.org/index.php?pageLink=browse.archive.protocols&id=20000|link]])
Oldfield, R. C. (1971). The assessment and analysis of handedness: The Edinburgh inventory. Neuropsychologia, 9, 97-113.
Porac, C., & Coren, S. (1981). Lateral preferences and human behavior. New York: Springer-Verlag.
|Variable Name||Variable ID||Variable Description||Version||dbGaP Mapping|
|PX020602_Hand_Write||PX020602010000||Please indicate your preferences in the use of hands in writing.||4||Variable Mapping|
|PX020602_Hand_Draw||PX020602020000||Please indicate your preferences in the use of hands in drawing.||4||Variable Mapping|
|PX020602_Hand_Throw||PX020602030000||Please indicate your preferences in the use of hands in throwing.||4||Variable Mapping|
|PX020602_Hand_Hold_Racquet||PX020602040000||Please indicate your preferences in the use of hands in holding a racquet.||4||Variable Mapping|
|PX020602_Hand_Clean_Teeth||PX020602050000||Please indicate your preferences in the use of hands in cleaning teeth.||4||Variable Mapping|
|PX020602_Hand_Hammer||PX020602060000||Please indicate your preferences in the use of hands in hammering.||4||Variable Mapping|
|PX020602_Hand_Strike_Match||PX020602070000||Please indicate your preferences in the use of hands in striking a match.||4||Variable Mapping|
|PX020602_Hand_Use_Eraser||PX020602080000||Please indicate your preferences in the use of hands in using an eraser.||4||Variable Mapping|
|PX020602_Hand_Deal_Card||PX020602090000||Please indicate your preferences in the use of hands in dealing cards.||4||Variable Mapping|
|PX020602_Hand_Thread_Needle||PX020602100000||Please indicate your preferences in the use of hands in threading a needle.||4||Variable Mapping|
|PX020602_Hand_Cut_Food||PX020602110000||Please indicate your preferences in the use of hands in cutting food with a knife.||4||Variable Mapping|
|PX020602_Hand_Total_Right||PX020602120100||How many "Right hand" in Questions 1-11?||4||N/A|
|PX020602_Hand_Total_Left||PX020602120200||How many "Left hand" in Questions 1-11?||4||N/A|
|PX020602_Hand_Total_Both||PX020602120300||How many "Both hands" in Questions 1-11?||4||N/A|
|PX020602_Handedness_Score||PX020602120400||SCORE = 100 x (TOTAL_RIGHT - TOTAL_LEFT) / (TOTAL_RIGHT + TOTAL_LEFT + TOTAL_BOTH)||4||N/A|
|PX020602_Handedness||PX020602120500||Handedness is classified by the score.||4||Variable Mapping|