Unequal Subscales (items)

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Unequal Subscales (items)

Salbod

Dear Friends,

                A colleague has presented me with an interesting problem. She used a measure with nine subscales. Three Parenting Attributes (PA): Bonding, Discipline and Education are crossed with three Age Levels: Infant, Adolescent, and Adult. Thus, the nine scales were (1)Bonding-Infant, (2)Bonding-adolescent, (3)Bonding-Adult,  (4)Discipline-Infant, (5)Discipline-adolescent, (6)Discipline-Adult, (7)Education-Infant, (8)Education -adolescent, and (9)Education –Adult.

The number of statements (behaviors) that respondents are asked to endorse (5 point scale) within each PA are different: 14, 9,  and 4, respectively.

 

The problem is that the sum of the PA scales (Bonding, Discipline, and Education) are based on different number of items.

 

My question is: how can I transform the data so that it can be treated with a 3X3 Repeated Measure ANOVA?

 

I want to thank you in advance for any suggestions you will send me about a possible solution to this problem.

 

Warm regards,

 

Stephen Salbod

Psychology Department

Pace University, NYC

  

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Re: Unequal Subscales (items)

statisticsdoc
Stephen,
Assuming that the items are all rated on the same metric. why not perform the analyses on the average rating, rather than the sum of ratings?
Regards,
Stephen Brand
---- "Salbod wrote:

> Dear Friends,
>                 A colleague has presented me with an interesting problem. She used a measure with nine subscales. Three Parenting Attributes (PA): Bonding, Discipline and Education are crossed with three Age Levels: Infant, Adolescent, and Adult. Thus, the nine scales were (1)Bonding-Infant, (2)Bonding-adolescent, (3)Bonding-Adult,  (4)Discipline-Infant, (5)Discipline-adolescent, (6)Discipline-Adult, (7)Education-Infant, (8)Education -adolescent, and (9)Education -Adult.
> The number of statements (behaviors) that respondents are asked to endorse (5 point scale) within each PA are different: 14, 9,  and 4, respectively.
>
> The problem is that the sum of the PA scales (Bonding, Discipline, and Education) are based on different number of items.
>
> My question is: how can I transform the data so that it can be treated with a 3X3 Repeated Measure ANOVA?
>
> I want to thank you in advance for any suggestions you will send me about a possible solution to this problem.
>
> Warm regards,
>
> Stephen Salbod
> Psychology Department
> Pace University, NYC
>

--
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