Questions. In a correlation research paper do the authors note the predictive variable and the criterion variable? Is it common to combine different research strategies in a single experiment?
Experiment, third-variable problem, directionality problem, manipulation and control of variables, treatment conditions, levels, ways of controlling extraneous variables (holding constant, matching and randomization), experimental and control groups (no-treatment, placebo), simulation and field studies
June 1 2006
BC – combination of the reward and punishment
B – reward only
C – punishment only
Example (left) from Walker, Shippen, Alberto, Houchins and Cihak (2005)5. Multiple-baseline designs