thurstone scaling. thurstone scaling - methods l equal-appearing intervals l successive intervals l...
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Thurstone ScalingThurstone Scaling
Thurstone Scaling - MethodsThurstone Scaling - Methods
Equal-appearing intervalsEqual-appearing intervals Successive intervalsSuccessive intervals Paired comparisonPaired comparison
Equal-Appearing IntervalsEqual-Appearing Intervals
Work quickly and effectively under
pressure49
Organize the work when directions are not specific.
39
Decide how to manage multiple tasks.
20
Manage resources effectively.4
Start with a Start with a large set of itemslarge set of items that you that you think all reflect the same construct.think all reflect the same construct.
Work quickly and effectively under
pressure49
Organize the work when directions are not specific.
39
Decide how to manage multiple tasks.
20
Manage resources effectively.4
Work quickly and effectively under
pressure49
Organize the work when directions are not specific.
39
Decide how to manage multiple tasks.
20
Manage resources effectively.4
Work quickly and effectively under
pressure49
Organize the work when directions are not specific.
39
Decide how to manage multiple tasks.
20
Manage resources effectively.4
Work quickly and effectively under
pressure49
Organize the work when directions are not specific.
39
Decide how to manage multiple tasks.
20
Manage resources effectively.4
Work quickly and effectively under
pressure49
Organize the work when directions are not specific.
39
Decide how to manage multiple tasks.
20
Manage resources effectively.4
Work quickly and effectively under
pressure49
Organize the work when directions are not specific.
39
Decide how to manage multiple tasks.
20
Manage resources effectively.4
Work quickly and effectively under
pressure49
Organize the work when directions are not specific.
39
Decide how to manage multiple tasks.
20
Manage resources effectively.4
Work quickly and effectively under
pressure49
Organize the work when directions are not specific.
39
Decide how to manage multiple tasks.
20
Manage resources effectively.4
Work quickly and effectively under
pressure49
Organize the work when directions are not specific.
39
Decide how to manage multiple tasks.
20
Manage resources effectively.4
Work quickly and effectively under
pressure49
Organize the work when directions are not specific.
39
Decide how to manage multiple tasks.
20
Manage resources effectively.4
Equal-Appearing IntervalsEqual-Appearing Intervals
Work quickly and effectively under
pressure49
ManyMany judges individually judges individually sortsort these these into into 11 piles11 piles where: where:
1 = least favorable to the concept1 = least favorable to the concept
11 = most favorable to the concept11 = most favorable to the concept
11 22 33 44 55 66
77 88 99 1010 1111
Manage resources effectively.4
Decide how to manage multiple tasks.
20
Organize the work when directions are not specific.
39
Equal-Appearing IntervalsEqual-Appearing Intervals
For For eacheach item, plot the item, plot the distributiondistribution of of pile numbers.pile numbers.
Equal-Appearing IntervalsEqual-Appearing Intervals
For each item, plot the distribution of For each item, plot the distribution of pile numbers.pile numbers.
0
5
10
15
20
25
1 2 3 4 5 6 7 8 9 10 11
Equal-Appearing IntervalsEqual-Appearing Intervals
For each item, plot the distribution of For each item, plot the distribution of pile numbers.pile numbers.
0
5
10
15
20
25
1 2 3 4 5 6 7 8 9 10 11
Get the Get the medianmedian..
Equal-Appearing IntervalsEqual-Appearing Intervals
For each item, plot the distribution of For each item, plot the distribution of pile numbers.pile numbers.
0
5
10
15
20
25
1 2 3 4 5 6 7 8 9 10 11
Get the median.Get the median.and and interquartile range.interquartile range.
Equal-Appearing IntervalsEqual-Appearing Intervals
Choose those items that are at Choose those items that are at equal equal intervalsintervals (from 1 to 11) and that have (from 1 to 11) and that have the the smallestsmallest interquartile range. interquartile range.
Work quickly and effectively under
pressure49
Manage resources effectively.4
Decide how to manage multiple tasks.
20
Organize the work when directions are not specific.
39
1111 2222 3333 4444 5555 6666 7777 8888 9999 10101010 11111111
Work quickly and effectively under
pressure49
Manage resources effectively.4
Decide how to manage multiple tasks.
20
Organize the work when directions are not specific.
39
Organize the work when directions are not specific.
39
The Other MethodsThe Other Methods
Follow a specific Follow a specific procedureprocedure for for sorting/comparingsorting/comparing items in terms of items in terms of the concept of interest.the concept of interest.
Use a simple statistical analysis to Use a simple statistical analysis to determine scale valuedetermine scale value for each item.for each item.
Select itemsSelect items from across the scale from across the scale range.range.
How Does Respondent Use?How Does Respondent Use?
Respondent checks Respondent checks agreeagree or or disagreedisagree for each item.for each item.
The respondent’s total score is the The respondent’s total score is the average scale valueaverage scale value of all the items of all the items agreed to.agreed to.