Development of a self-report measure of cognitive change: assessment of interpretability in two samples, people with HIV and people without HIV.
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| Title: | Development of a self-report measure of cognitive change: assessment of interpretability in two samples, people with HIV and people without HIV. |
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| Authors: | Kaur, Navaldeep, Askari, Sorayya, Fellows, Lesley K., Brouillette, Marie-Josée, Mayo, Nancy E. |
| Source: | Quality of Life Research. Mar2023, Vol. 32 Issue 3, p853-865. 13p. 1 Diagram, 4 Charts, 3 Graphs. |
| Subjects: | Cognitive ability, Medical care, Health outcome assessment, Quality of life, HIV |
| Abstract: | Aim: The overall aim of this study was to develop a method of measuring change in cognitive ability from the person's perspective. Methods: Cognitive change items came from an item pool that was used to develop the Communicating Cognitive Concerns Questionnaire (C3Q). The change items were administered to a test sample of 211 people with HIV + and a sample of 484 people drawn from the general population (HIV- sample). Rasch analysis was used to identify items that formed a linear continuum and correlations with measures of related constructs were used to support the interpretability of the new measure. Results: Eleven of the original 12 change items fit the unidimensional Rasch model in both samples with a near similar ordering of the items. The average value for cognitive change of the HIV + sample was greater than that of the HIV- sample. Values on C3Q-Change correlated most highly (> 0.7) with current self-reported cognitive status and measures of depression and anxiety (> 0.6). The lowest correlation was with performance-based cognitive ability (r = 0.2). Conclusion: The items of C3Q-Change fit a strong measurement model and related to converging constructs in an expected way. Further work needs to be done to assess the meaning of self-reported cognitive change in relationship to measured change and to examine sources of differential item functioning. [ABSTRACT FROM AUTHOR] |
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| Database: | Psychology and Behavioral Sciences Collection |
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| Abstract: | Aim: The overall aim of this study was to develop a method of measuring change in cognitive ability from the person's perspective. Methods: Cognitive change items came from an item pool that was used to develop the Communicating Cognitive Concerns Questionnaire (C3Q). The change items were administered to a test sample of 211 people with HIV + and a sample of 484 people drawn from the general population (HIV- sample). Rasch analysis was used to identify items that formed a linear continuum and correlations with measures of related constructs were used to support the interpretability of the new measure. Results: Eleven of the original 12 change items fit the unidimensional Rasch model in both samples with a near similar ordering of the items. The average value for cognitive change of the HIV + sample was greater than that of the HIV- sample. Values on C3Q-Change correlated most highly (> 0.7) with current self-reported cognitive status and measures of depression and anxiety (> 0.6). The lowest correlation was with performance-based cognitive ability (r = 0.2). Conclusion: The items of C3Q-Change fit a strong measurement model and related to converging constructs in an expected way. Further work needs to be done to assess the meaning of self-reported cognitive change in relationship to measured change and to examine sources of differential item functioning. [ABSTRACT FROM AUTHOR] |
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| ISSN: | 09629343 |
| DOI: | 10.1007/s11136-022-03288-8 |
