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in the following cross-lagged panel design does x appear to cause y does y appear to cause x do both variables
a researcher conducted a factor analysis of five items on which participants rated their current mood interpret the
researchers use hierarchical regression cross-lagged panel designs and structural equations modeling to partly resolve
1 what advantage do experiments have over descriptive and correlational studies2 a well-designed experiment possesses
1 true or false every experiment has as many conditions as there are levels of the independent variable2 give your own
1 must all experiments include a control group explain2 in what way do researchers take a risk if they do not pilot
1 explain how you would use a manipulation check to determine whether you successfully manipulated room temperature in
1 why must researchers ensure that their experimental groups are roughly equivalent before manipulating the independent
explain how you would conduct the study in given question as a within-subjects designquestion-imagine that you were
1 what are order effects and how does counterbalancing help us deal with them2 distinguish between treatment confound
1 what is the relationship between confounding and internal validity2 what are experimenter expectancy effects and how
define the confounds in the following list and tell why each confound undermines the internal validity of an
1 should demand characteristics be eliminated or strengthened in an experiment explain2 how do researchers detect and
1 what can researchers do to minimize error variance2 discuss the trade-off between internal and external validity
imagine that you are interested in the effects of background music on peopleamp39s performance at workdesign an
1 why do researchers calculate the coefficient of determination2 what does a coefficient of determination of 40
1 why can it be argued that the formula for calculating r should be named the edgeworth rather than the pearson
1 what is a restricted range and what effect does it have on correlation coefficients how would you detect and correct
1 do outliers increase or decrease the magnitude of correlation coefficients2 what impact does reliability have on
1 how can partial correlation help researchers explore possible causal relationships among correlated variables2 when
imagine that you predicted a moderate correlation between peoples scores on a measure of anxiety and the degree to
following the rash of school shootings that occurred in the late 1990s some individuals suggested that violent video
a researcher obtained a sample of 180 participants between the ages of 18 and 24 and calculated the phi coefficient
imagine you obtained a point biserial correlation of 35 between gender and punctuality showing that men arrived later
imagine that you are a college professor you notice that fewer students appear to attend class on friday afternoons