Unobtrusive measurement today
In: New directions for methodology of behavioral science 1
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In: New directions for methodology of behavioral science 1
In: New directions for program evaluation: a quarterly sourcebook, Band 1993, Heft 60, S. 1-1
ISSN: 1534-875X
In: American behavioral scientist: ABS, Band 28, Heft 4, S. 527-542
ISSN: 1552-3381
In: American behavioral scientist: ABS, Band 28, Heft 4, S. 527
ISSN: 0002-7642
In: New directions for program evaluation: a quarterly sourcebook, Band 1980, Heft 8
ISSN: 1534-875X
In: New directions for program evaluation: a quarterly sourcebook, Band 1980, Heft 8, S. 1-18
ISSN: 1534-875X
AbstractShould evaluation research move toward the status of an independent field or discipline or should it be nurtured as a subspecialty within academic and problem areas? Since the field is new, it may be too early to settle on any single model for training.
In: New directions for program evaluation: a quarterly sourcebook, Band 1980, Heft 8, S. 89-90
ISSN: 1534-875X
AbstractKey concepts of the volume are summarized in the editor's concluding chapter.
In: New directions for program evaluation 57
In: Environment and behavior: eb ; publ. in coop. with the Environmental Design Research Association, Band 29, Heft 3, S. 422-426
ISSN: 1552-390X
In: Evaluation and Program Planning, Band 18, Heft 1, S. 77-87
In: Evaluation and program planning: an international journal, Band 18, Heft 1, S. 77-87
ISSN: 0149-7189
In: The Journal of sex research, Band 7, Heft 1, S. 62-71
ISSN: 1559-8519
In: The Journal of social psychology, Band 79, Heft 1, S. 3-12
ISSN: 1940-1183
In: The Journal of social psychology, Band 77, Heft 1, S. 135-137
ISSN: 1940-1183
In: Journal of methods and measurement in the social sciences, Band 3, Heft 2, S. 13
ISSN: 2159-7855
Growth curve analysis provides important informational benefits regarding intervention outcomes over time. Rarely, however, should outcome trajectories be assumed to be linear. Instead, both the shape and the slope of the growth curve can be estimated. Non-linear growth curves are usually modeled by including either higher-order time variables or orthogonal polynomial contrast codes. Each has limitations (multicollinearity with the first, a lack of coefficient interpretability with the second, and a loss of degrees of freedom with both) and neither encourages direct testing of alternative hypothesized curve shapes. Especially in studies with relatively small samples it is likely to be useful to preserve as much information as possible at the individual level. This article presents a step-by-step example of the use and testing of hypothesized curve shapes in the estimation of growth curves using hierarchical linear modeling for a small intervention study. DOI:10.2458/azu_jmmss_v3i2_herman