A question about null hypothesis is included.

In a study in which null hypothesis has been rejected, we should be aware of the possibility of ________ alternative hypotheses, Type II Errors, change due to new observations, all are correct This question is posed.

Research Methods

Generalizability of an experiment is related to ________ construct validity, external validity, internal validity, or statistical validity I believe either - external validity or internal validity - could be correct - but feel external validity is the best answer. Please advise answer & why. Thanks!!

This job focuses on between-groups variance.

If we do not observe a sufficiently large between-groups variance, then we have not observed __________ experimenter effects, an effect of the dependent variable, enough samples, or an effect of the independent variable I believe - enough samples - is the answer.

Effects of external validity are listed.

The major effect of reduced ecternal validity is ______________ dificulity in generalizing laboratory experimentation to the natural environment, a decrease in ternal validity as well, a decrease in all types od validity, or that it invalidates the study

Problems in administration procedures are noted.

Problems in administration procedures __________ (a)occur only once the data has been collected, (b)should be solved in pretesting before data collection, (c)do not occur if an established procedure is used, (d)should be handled on a participant-by-participant basis