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VARIABLES - Coggle Diagram

- - - - SPECIAL
        
        Moderator Variables
        
        Secondary IV which are selected, manipulated and controlled by the experimenter because they suspect that these variables alter or moderate the relationship between primary IV and DV
        
        Intervening Variables
        
        Exist theoretically and cannot be seen or manipulated by the experimenter, but tends to influence DV (What is it about the IV that produces the predicted outcome?)
      - NATURE OF VARIABLES
        
        Subject Variables
        
        Characteristics of the subject
        
        Natural Subject Variable
        
        Characteristics of the subject which exist before the start of the experiment
        
        Induced Subject Variable
        
        Characteristics induced within the subject due to the experimenter's instructions
        
        Environmental Variables
        
        Characteristics of the environment
        
        Task Variables
        
        Characteristics of the behavioural task presented to the subject
      - MODE OF MANIPULATION
        
        Type E IV
        
        IV which is experimentally or directly manipulated
        
        Type S IV
        
        IV which is indirectly manipulated by the experimenter through selection
  - - - Situation Relevant EV
        
        Characteristics of the task and environment controlled by the experimenter which tend to influence the DV (task and environmental variables)
      - Sequence Relevant EV
        
        Arises due to the order or rank of tasks (fatigue or practice effect)
      - Subject Relevant EV
        
        Characteristics of the subject controlled by the experimenter which tend to influence the DV (subject variables)
- - - - Continuous Variable
        
        Variables which can be measured in any arbitrary degree of exactness or fineness
      - Discrete Variable
        
        Variables which cannot be measured in an arbitrary degree of exactness or fineness because the variables have a clear gap