[Forum SIS] Annuncio di seminario

[Anna Gottard]

DiSIA  (Dipartimento di Statistica, Informatica, Applicazioni “G. Parenti”)
Università di Firenze

- PROSSIMO SEMINARIO -

Giovedì 14 Aprile 2016 ore 14.30

Tenko Raykov (Michigan State University)  terrà il seguente seminario : 

On Latent Change Model Choice in Longitudinal Studies <http://local.disia.unifi.it/abstract-seminari.php?#134>

This talk is concerned with two helpful aids in the process of choosing between models of change in repeated measure investigations in the behavioral and social sciences: (i) interval estimates of proportions explained variance in longitudinally followed variables, and (ii) individual case residuals associated with these variables. The discussed method allows obtaining confidence intervals for the R-squared indices of repeatedly administered measures, as well as subject-specific discrepancies between model predictions and raw data on the observed variables. In addition to facilitating evaluation of local model fit, the approach is useful for the purpose of differentiating between plausible models stipulating different patterns of change over time. This feature of the described method becomes particularly helpful in empirical situations characterized by (very) large samples and high statistical power, which are becoming increasingly more frequent in complex sample design studies in the behavioral, health, and social sciences. The approach is similarly applicable in cross-sectional investigations, as well as with general structural equation models, and extends the set of means available to substantive researchers and methodologists for model fit evaluation beyond the traditionally used overall goodness of fit indexes. The discussed method is illustrated using data from a nationally representative study of older adults.

Referente: Leonardo Grilli

Il seminario sara' tenuto presso l’aula 32 del DiSIA, Viale Morgagni n. 59 - 50134 Firenze.

Tutti gli interessati sono cordialmente invitati a partecipare.

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Anna Gottard
Dipartimento di Statistica Informatica Applicazioni
Università di Firenze
V.le Morgagni 59, Firenze

gottard a disia.unifi.it <mailto:gottard a disia.unifi.it>
http://local.disia.unifi.it/gottard/ <http://local.disia.unifi.it/gottard/>
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