PSYS 284 EXAM 3 QUESTIONS AND
ANSWERS. VERIFIED 2026.
How to find a curvilinear relationship - ANS need 3+ levels of IV
in order to find an interaction between two or more variables - ANS you would use a factorial
design
what is the main effect in a factorial design? - ANS the independent variable (IV)
IV x PV design - ANS A factorial design that includes both an experimental independent
variable (IV) and a nonexperimental participant variable (PV).
what does a factorial design do? - ANS Allows researchers to examine how different
individuals respond to the same manipulated IV
the amount of variables... - ANS demonstrates the amount of MAIN EFFECTS that are
possible
How many conditions would a 2x2 factorial design have? - ANS 4
@COPYRIGHT 2026/2027 ALL RIGHTS RESERVED
1
, *multiply the numbers
*know how to write a factorial design out! - ANS
correlation coefficient - ANS indicates the direction and strength of the relationship between
two variable
positive correlation - ANS both variables increase or decrease together
negative correlation - ANS the relationship between two variables in which one variable
increases as the other variable decreases
no correlation - ANS There is no relationship between data sets.
why use scatterplots? - ANS to determine the relationship between variables
type I error - ANS relationship between two variables when the relationship DOES NOT really
exist
* think of a judge sending an INNOCENT man to jail *
Type II error - ANS An error that occurs when a researcher concludes that the independent
variable had no effect on the dependent variable, when in truth it did; a "false negative"
what do true experimental designs use - ANS random assignment
@COPYRIGHT 2026/2027 ALL RIGHTS RESERVED
2
ANSWERS. VERIFIED 2026.
How to find a curvilinear relationship - ANS need 3+ levels of IV
in order to find an interaction between two or more variables - ANS you would use a factorial
design
what is the main effect in a factorial design? - ANS the independent variable (IV)
IV x PV design - ANS A factorial design that includes both an experimental independent
variable (IV) and a nonexperimental participant variable (PV).
what does a factorial design do? - ANS Allows researchers to examine how different
individuals respond to the same manipulated IV
the amount of variables... - ANS demonstrates the amount of MAIN EFFECTS that are
possible
How many conditions would a 2x2 factorial design have? - ANS 4
@COPYRIGHT 2026/2027 ALL RIGHTS RESERVED
1
, *multiply the numbers
*know how to write a factorial design out! - ANS
correlation coefficient - ANS indicates the direction and strength of the relationship between
two variable
positive correlation - ANS both variables increase or decrease together
negative correlation - ANS the relationship between two variables in which one variable
increases as the other variable decreases
no correlation - ANS There is no relationship between data sets.
why use scatterplots? - ANS to determine the relationship between variables
type I error - ANS relationship between two variables when the relationship DOES NOT really
exist
* think of a judge sending an INNOCENT man to jail *
Type II error - ANS An error that occurs when a researcher concludes that the independent
variable had no effect on the dependent variable, when in truth it did; a "false negative"
what do true experimental designs use - ANS random assignment
@COPYRIGHT 2026/2027 ALL RIGHTS RESERVED
2
