Browsing Research Output by Author "Pretorius, Charl"
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The design and evaluation of a hope enhancement programme for adults
Pretorius, Charl; Venter, Chris; Temane, Michael; Wissing, Marié (Taylor & Francis, 2008)The study evaluated the effectiveness of a hope enhancement programme for a group of adults and its impact on general psychological well-being. The intervention programme focused on participants' abilities to set feasible ... -
Independence tests in semiparametric transformation models
Hušková, Marie; Meintanis, Simos G.; Pretorius, Charl; Neumeyer, Natalie (SASA, 2018)Consider an observed response Y which, following a certain transformation Yϑ by := Tϑ (Y ), can be expressed by a homoskedastic nonparametric regression model reference a vector X of regressors. If this transformation model ... -
Tests for validity of the semiparametric heteroskedastic transformation model
Hušková, Marie; Meintanis, Simos G.; Pretorius, Charl (Elsevier, 2020)There exist a number of tests for assessing the nonparametric heteroskedastic location-scale assumption. The goodness-of-fit tests considered are for the more general hypothesis of the validity of this model under a ...