Ch. 11: More on Experiments
When the independent variable is found to have no effect on the dependent variable.
What is a null effect?
A 2x3 factorial design contains this many independent variables.
What are two?
This is the biggest validity threat that plagues quasi-experimental designs.
What is internal validity?
This questionable practice involves developing the hypothesis after examining the results.
What is HARKing?
The two other classes that I taught this semester.
What are Intro to Psychology and Human Sexuality?
When a study's IV is too weak to produce a detectable change in the DV, this is the likely explanation for a null effect.
What is a weak manipulation?
This occurs when the effect of one IV depends on the level of another IV.
What is an interaction effect?
A quasi-experimental design that compares a treatment group and comparison group both before and after the IV.
What is a nonequivalent control group pretest/posttest design?
A type of replication that replicates the original study as closely as possible and adds additional levels to the IV.
What is replication-plus-extension?
The one psychology tattoo I have on my right forearm.
What is the chemical symbol for serotonin?
How most internal validity threats can be prevented.
What is adding a comparison group?
Variables such as gender, age, or occupation used in factorial designs.
What are participant variables?
This small-N design staggers treatment across different people, behaviors, or settings.
What is a multiple-baseline design?
The tendency for journals to publish only significant results.
What is the file drawer problem?
My first official job.
What is Hot Dog on a Stick?
Environmental distractions that can make it difficult to detect true differences between groups.
What is situation noise?
In a 3x2x4 design, this is the maximum number of possible main effects.
What is three? (One for each IV.)
This strategy is the best way to improve external validity in small-N designs.
What is repeating/combining small-N studies across different participants, settings, and behaviors?
This type of validity is concerned with whether research findings hold up outside of the lab, in everyday real-world contexts.
What is ecological validity?
My original proposed major at Hartnell College before I decided to major in psychology.
What is business?
The probability of correctly rejecting the null hypothesis, which can be increased by adding more participants.
What is statistical power?
A factorial design that includes at least one between-subjects IV and at least one within-subjects IV.
What is a mixed-factorial design?
Unlike a true experiment, a quasi experiment uses this type of variable and lacks this key design feature that controls for confounds.
What are quasi-independent variable (quasi-IV) and random assignment?
Participants that are not representative of the world population, but are the most sampled in many research studies.
What are westernized, educated, industrialized, rich, and democratic (WEIRD) participants?
The name of my master's degree and where I obtained it.
What is M.A. in Psychological Science from CSU Northridge (CSUN)?
Name all six internal validity threats found in one-group pretest/posttest designs.
What are (R)egression, (A)ttrition, (M)aturation, (H)istory, (I)nstrumentation, and (T)esting threats?