| 1. |
- Edvardsson, Bo, 1944-, et al.
(author)
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A method for evaluation of metric properties of response scales
- 1976
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In: Quality and quantity. - Amsterdam : Elsevier. - 0033-5177 .- 1573-7845. ; 10:3, s. 241-249
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Journal article (peer-reviewed)abstract
- The metric properties of five different response scales in measurment of attitudes, interests and personality traits are studied with an experiment group (N = 97) and a control group (N=40). The scales were different in how equal the distances between the response alternatives were.
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| 2. |
- Vegelius, Jan, et al.
(author)
-
Polari, a Fortran IV program for measures of attitudinal polarization
- 1976
-
In: Educational and Psychological Measurement. - : SAGE Publications. - 0013-1644 .- 1552-3888. ; 36:3, s. 717-719
-
Journal article (peer-reviewed)abstract
- The two major purposes of this paper were: (1) to describe the theoretical background underlying the mathematical development of different measures of the degree of attitudinal polarization applicable to bipolar questions and (2) to outline a small FORTRAN IV program POLARI that provides a rapid means for calculation of four of these measures.
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| 3. |
- Edvardsson, Bo, 1944-, et al.
(author)
-
Measures of attitudinal polarization
- 1975
-
In: Scandinavian Journal of Psychology. - Oxford : Blackwell. - 0036-5564 .- 1467-9450. ; 16:1, s. 247-254
-
Journal article (peer-reviewed)abstract
- Criteria for measures of attitudinal polarization, i.e. degree of opposition among people on a specific issue, are proposed and some formulas, including the standard deviation, are evaluated in relation to the criteria. The formulas were also tested on empirical data with respect to level, dispersion and agreement of received values. The measures on the whole showed a high degree of agreement. There clearly exist instances where the standard deviation is not an adequate measure of attitudinal polarization. Some guidelines are given for the choice of constant values in one of the proposed formulas.
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| 4. |
- Vegelius, Jan, et al.
(author)
-
On the use of the G index in O-, P-, R-. S-, and T-analyses
- 1979
-
In: Educational and Psychological Measurement. - 0013-1644 .- 1552-3888. ; 39:4, s. 707-710
-
Journal article (peer-reviewed)abstract
- The possibility of using the G index and its generalizations in the six basic factor analytic designs is discussed. For O- and Q-analyses G should be used if there is no mutual direction of all the variables, as G is invariant over variable reflection. In all the six designs G should also be used if the scale centre is more suitable as a reference point than the mean value.
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