8 Classic Psychological Experiments
There are many famous (and sometimes infamous) psychological experiments that have helped shape our understanding of the human mind and …
Psychology Research Methods
What Are Practice Effects?
Sometimes in psychology experiments, groups of participants are required to take the same test more than once. In some cases, …
Random Assignment: Definition With Examples
Random assignment involves using procedures that rely on chance to assign participants to groups. Doing this means that every single …
What Is a Single-Blind Study?
In psychology, a single-blind study is a type of experiment or clinical trial in which the experimenters are aware of which …
What Is an Institutional Review Board?
In psychology research, an institutional review board (also known as an IRB) is a group of individuals designated to review …
What Is an Extraneous Variable?
An extraneous variable is anything in a psychology experiment other than the independent and dependent variables. The variables can present challenges …