Which of the following procedures are participants assigned to different experimental groups on the basis of chance and chance alone?
random assignment to condition: A procedure in which participants are assigned to different experimental groups or “conditions” on the basis of chance and chance alone.
What perspective suggests that the field should focus on observable behavior that can be measured objectively?
Behaviorist
When an experimenter deliberately changes a variable it is called a?
Experimental Manipulation. The change that an experimenter deliberately produces in a situation. Treatment.
What variable can be changed or manipulated?
independent variable
What is an example of an independent variable in an experiment?
The independent variable (IV) is the characteristic of a psychology experiment that is manipulated or changed by researchers, not by other variables in the experiment. For example, in an experiment looking at the effects of studying on test scores, studying would be the independent variable.
How do you classify a variable?
Classifying variables can be somewhat contentious. Standard statistical textbooks will state that variables can be broadly classified as categorical or continuous. Categorical variables can be further categorised into nominal (e.g. ethnic group), ordinal (e.g. tumour staging) and dichotomous (e.g. sex).
What are variables and how do we classify them?
Parts of the experiment: Independent vs dependent variables
| Type of variable | Definition |
|---|---|
| Independent variables (aka treatment variables) | Variables you manipulate in order to affect the outcome of an experiment. |
| Dependent variables (aka response variables) | Variables that represent the outcome of the experiment. |
What type of variable is attitude?
In the above examples, sex is an example of a nominal scale of measurement, or a classification or categorization; attitude is ordinal, or an ordering or ranking of responses; and age has an interval and ratio scale of measurement, with meaningful measures of distances and ratios between values.
What kind of variable is size?
Ordinal variables have an inherent order. For example: Likert scales (strongly disagree, disagree, neutral, agree, strongly agree) t-shirt size (small, medium, large)
What type of variable is dress size?
Answer. Answer: However one notable characteristic of the interval level is the value of 0 does not denote absence of data, rather it is just the point on the scale examples for this are shoe size ring size or dress size where there is no natural zero.
What type of variable is screen type?
qualitative variable