Hypotheses Flashcards
What is a hypothesis?
A prediction that researchers make about what they think will happen in their study
What does operationalising a hypothesis mean?
Specifying exactly what it is we will test (the independent variable) and exactly how we will measure the behaviour/response (the dependent variable)
What is it called when, in a hypothesis, you specify exactly what it is you will test (the IV) and exactly how you will measure the behaviour/response (the DV)?
Operationalise it
What must you do to a hypothesis?
Operationalise it
What is another name for an experimental hypothesis?
An alternative hypothesis
What is another name for an alternative hypothesis?
An experimental hypothesis
What is an experimental/alternative hypothesis?
One that predicts there will be a significant affect from the IV on the DV.
a) What type of hypothesis is the following prediction?
‘Males will recall more words from a list than females’
b) Why is this?
a) An experimental or alternative hypothesis
b) It predicts that the IV (gender) will have an affect on the DV (number of words recalled)
True or False: the following prediction is an experimental/alternative hypothesis
‘Males will recall more words from a list than females’
True - It predicts that the IV (gender) will have an affect on the DV (number of words recalled)
True or False: the following prediction is a null hypothesis
‘Males will recall more words from a list than females’
False - it is an experimental/alternative hypothesis because it predicts that the IV (gender) will have an affect on the DV (number of words recalled)
Why do you need to make both predictions at the start of an investigation?
So in your conclusion you can reject one type and accept another
What is a null hypothesis?
One that predicts the IV will not have a significant affect on the DV (or that any affect will be due to chance and not the independent variable)
a) What type of hypothesis is the following prediction?
‘There will be no difference in the number of words recalled from a list between males and females’
b) Why is this?
a) Null hypothesis
b) It predicts there will be no affect of the IV (gender) on the DV (number of words recalled in a list)
True or False: the following prediction is an experimental/alternative hypothesis
‘There will be no difference in the number of words recalled from a list between males and females’
False - it is a null hypothesis because it predicts there will be no affect of the IV (gender) on the DV (number of words recalled in a list)
True or False: the following prediction is a null hypothesis
‘There will be no difference in the number of words recalled from a list between males and females’
True - It predicts there will be no affect of the IV (gender) on the DV (number of words recalled in a list)
Identify if the following hypothesis is operationalised, partially operationalised, or not operationalised.
‘Violence will have a significant affect on behaviour’
Not operationalised
Identify if the following hypothesis is operationalised, partially operationalised, or not operationalised.
‘Showing a picture with a word will have a significant affect on memory’
Partially operationalised
Identify if the following hypothesis is operationalised, partially operationalised, or not operationalised.
‘Self report aggression scores will be higher for those who watch a violent TV programme than those who don’t’
Operationalised
Identify if the following hypothesis is operationalised, partially operationalised, or not operationalised.
‘Males will recall more words from a list than females’
Operationalised
The following hypothesis is operationalised - true or false?
‘Violence will have a significant affect on behaviour’
False - not operationalised
The following hypothesis is partially operationalised - true or false?
‘Violence will have a significant affect on behaviour’
False - not operationalised
The following hypothesis is not operationalised - true or false?
‘Violence will have a significant affect on behaviour’
True
The following hypothesis is operationalised - true or false?
‘Showing a picture with a word will have a significant affect on memory’
False - partially operationalised
The following hypothesis is partially operationalised - true or false?
‘Showing a picture with a word will have a significant affect on memory’
True
The following hypothesis is not operationalised - true or false?
‘Showing a picture with a word will have a significant affect on memory’
False - partially operationalised
The following hypothesis is operationalised - true or false?
‘Self report aggression scores will be higher for those who watch a violent TV programme than those who don’t’
True
The following hypothesis is partially operationalised - true or false?
‘Self report aggression scores will be higher for those who watch a violent TV programme than those who don’t’
False - operationalised
The following hypothesis is not operationalised - true or false?
‘Self report aggression scores will be higher for those who watch a violent TV programme than those who don’t’
False - operationalised
The following hypothesis is operationalised - true or false?
‘Males will recall more words from a list than females’
True
The following hypothesis is partially operationalised - true or false?
‘Males will recall more words from a list than females’
False - operationalised
The following hypothesis is not operationalised - true or false?
‘Males will recall more words from a list than females’
False - operationalised
Identify if the following prediction is an example of an experimental or null hypothesis.
‘Participants who receive an injection of adrenalin will show a significantly faster heart rate than participants who don’t.’
Experimental hypothesis
The following prediction is an example of an experimental hypothesis - true or false?
‘Participants who receive an injection of adrenalin will show a significantly faster heart rate than participants who don’t.’
True
The following prediction is an example of a null hypothesis - true or false?
‘Participants who receive an injection of adrenalin will show a significantly faster heart rate than participants who don’t.’
False - experimental
Identify if the following prediction is an example of an experimental or null hypothesis.
‘Females will drive significantly more carefully than males.’
Experimental hypothesis
The following prediction is an example of an experimental hypothesis - true or false?
‘Females will drive significantly more carefully than males.’
True
The following prediction is an example of a null hypothesis - true or false?
‘Females will drive significantly more carefully than males.’
False - experimental
Identify if the following prediction is an example of an experimental or null hypothesis.
‘There will be no significant affect of social class on IQ scores’
Null hypothesis
The following prediction is an example of an experimental hypothesis - true or false?
‘There will be no significant affect of social class on IQ scores’
False - null
The following prediction is an example of a null hypothesis - true or false?
‘There will be no significant affect of social class on IQ scores’
True