Common tasks:
(1) writing
(2) drawing
(3) throwing
(4) using scissors
(5) using a toothbrush
(6) using a knife without a fork
(7) using a spoon
(8) sweeping with a broom, with placement of the upper hand
(9) striking a match
(10) opening the lid of a box
|
Response
|
Points for Right
|
Points for Left
|
|
right hand absolutely
|
2
|
0
|
|
right hand
|
1
|
0
|
|
cannot say
|
1
|
1
|
|
left hand
|
0
|
1
|
|
left hand absolutely
|
0
|
2
|
where:
• There are 2 additional activities that were added after the initial data was collected. These deal with (1) kicking a ball (which foot used) and (2) eye preference when using only 1 eye.
total score for right hand =
= SUM(points for all 10 items relative to right hand)
total score for left hand =
= SUM(points for all 10 items relative to left hand)
laterality quotient =
= ((total points for right side) - (total points for left side)) / ((total points for right side) + (total points for left side)) * 100
Interpretation:
• minimum score for either side: 0
• maximum score for either side: 20
• minimum laterality quotient: -100 (indicates left handedness)
• maximum laterality quotient: +100 (indicated right handedness)
In the implementation the range of -5 to +5 is termed "ambidextrous".
An alternative index might be to compare the score for each side vs the maximum (20).
