The effect of selection on genetic parameter estimates

A simulation study was carried out to investigate the effect of selection on the estimation of genetic parameters for butterfat production in dairy cattle. It was found that selection leads to a substantial overestimation of fixed effects and variance components and an underestimation of heritability estimates. This effect was attributed to the fact that all information on all animals in the analysis should be available to compensate for the effect of selection. (South African Journal of Animal Science, 2001, 31(2): 107-114

A relação terapeuta-cliente sob o enfoque comportamental

A relação terapeuta-cliente deve ser vista como uma das mais importantes variáveis dentre aquelas introduzidas na experiência do cliente com o início da terapia. Neste ponto, acredito que todas as terapias têm este aspecto em comum, embora possam usá-lo de maneiras e intensidades diferentes