# Aims, Hypotheses, IVs and DVs

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• Created by: FatCat3
• Created on: 27-06-22 20:49
what's the independent and dependant variable?
IV-researcher manipulates this variable and it is assumed to have a direct impact on the dependant variable
DV-researcher measures this variable and is affected by the independent variable
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what is an aim?
an aim always try's to examine the effect of a variable, it is the goal that needs to be achieved of the experiment, in order to achieve these aims, a researcher needs to clear about the purpose of the investigation
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what is an hypothesis?
a hypothesis is a clear prediction of the possible outcomes of a study or the rs between the diff variables in a study
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what is a null hypothesis?
this states the IV will have no effect on the DV
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what is an alternative hypothesis?
this states that the IV will have an effect on the DV
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what is a directional hypothesis?
this predicts the specific nature/direction of the difference between two or more
variables and is typically based on past research, can also be referred to one-tailed
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what is a non-directional hypothesis?
this predicts that a difference will exist between two or more variables, without predicting the exact direction of the difference, usually cuz previous research has been inconclusive, specific nature of the effect of the IV on the DV cant be predicted-
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counting w previous card
-, sometimes referred to as two-tailed.
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what is operationalisation?
describes how a variable is defined by a researcher; it can be applied to IV, DV or co-variables. hypothesis should always contain an operationalised IV or DV
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## Other cards in this set

### Card 2

what is an aim?

#### Back

an aim always try's to examine the effect of a variable, it is the goal that needs to be achieved of the experiment, in order to achieve these aims, a researcher needs to clear about the purpose of the investigation

### Card 3

#### Front

what is an hypothesis?

### Card 4

#### Front

what is a null hypothesis?

### Card 5

#### Front

what is an alternative hypothesis?