Even considering this more homogeneous sample, we find the more disadvantaged categories showing larger policy effects.
Furthermore, studies with more homogeneous samples; and longitudinal designs are warranted in order to gain a better understanding of causation with regard to illness factors specific to schizophrenia.
Further research using a larger, more homogeneous sample and longitudinal design whereby measures of mood and color sensitivity are correlated before, during, and after treatment in depressed and manic patients would be justified.
Moreover, to get a more homogeneous sample only properties with a total noise level of at least 50 dB, i.e. the official Swedish threshold value for when noise is assumed to be disturbing, were included.11.11
In order to deal with a more homogeneous sample, we exclude individuals who experienced a maternity leave episode, received redundancy payments, work on a temporary contract or had a part time job during the year.
Our study, contrary to Bialystok et al.'s (2004), investigated a more homogeneous sample, since all the participants were born and raised in Brazil, were extremely familiar with computers and were controlled for video game use.
However, if the wild-caught birds represent a more homogeneous sample than the hand-reared birds, as would be suggested by this hypothesis, then we would expect to see greater variation within the hand-reared group, and there is no evidence from any of our analyses to support this.
Replication is needed using larger and more homogeneous samples.
We made this choice in order to have a more homogeneous sample for the analysis.
Indeed, a very large sample encompassing wide variability in preferences may lead to less precise results than a small, more homogeneous sample [ 63].
