Independent Variables
In the simplest experimental design, there are only this many levels of the independent variable.
What are two?
Researchers recognize that in any given situation _________variables are operating to effect behavior.
What are several, many, a number of, etc.
This is the effect that each variable has by itself.
What is the main effect? (Please please please get this one correct on the first try....)
When you assign a different group of participants to each of the four conditions of an experiment it is know as this.
What is an independent groups or between-subjects design?
An experimental design with only two levels of independent variable cannot detect ___________relationships between variables.
What are curvilinear? (page 189)
These experimental designs are have more than one independent variable.
What are factorial designs?
The main effect of each independent variable is is the ___________between the independent variable andthe dependent variable.
What is overall relationship? (P.191)
A ___________analysis examines mean differences at each level of the independent variable.
What is simple main effect?
A design with only ____levels of one independent variable cannot provide very much information about the exact form of the relationship between the independent and dependent variables.
What is two?
In factorial design, ____levels of each independent variable are combined with _____levels of the other independent variables.
What are all? (P.190)
This helps us determine whether the effects we are seeing are significant main effects.
What are statistical tests? (P.192)
A _______ effect is the effect each variable has by itself.
What is the main effect?
In the simplest experimental design, ____independent variable(s) is/are manipulated, and _____dependent variable(s) is/are measured.
What is one independent variable and one dependent variable? (P.188)
The simplest factorial designs has this many independent variables.
What is two? (P. 190)
Overall main effect means are obtained by doing this.
What is averaging across all participants in each group? (P. 192)
If there is ____________between two independent variables, the effect of one independent variable depends on the particular level of the other variable.
What is interaction?
When there is a positive relationship between two variables, but it is not a strictly positive linear relationship, it is known as this.
What is a positive monotonic relationship?
A design with two independent variables, one having two levels and the other having three levels, is a _____factorial design.
What is 2x3?
In a design with two independent variables, there are this many main effects.
What is two, one for each independent variable (P. 191)
Experimental designs with more than one independent variable
What are factorial designs?