Test tomoz Flashcards
Is this a directional or non directional hypothesis?
There will be a difference in how much the participant speaks after drinking cola and before drinking cola
non directinal
Is this a directional or non directional hypothesis?
Participants will talk more after drinking cola then before drinking cola
directional
When are directional hypoteses used
when previous research suggest a particular outcome
Operationalise the variables for :
Participants will talk more after drinking cola then before drinking cola
Participants will talk 2x more after drinking 100gs of cola then before drinking 100gs of cola
State the independant variable:
Participants will talk more after drinking cola then before drinking cola
Weather the participant has or has not drunk cola
What should influence the DV
the IV
What are extreneous variables
Any other thing that could potentially effect the DV, steps should be taken to minimise its effect, many such as age of participant are easy to control
What are confounding variables
they vary with the IV, having a second unintended IV such as personality
What are demand characteristics?
clues given to help the participant understand what is going on
How many participants change their behaviour in an experiment
Please U
Screw U
What is an investigator effect
The effect of the investigators behaviour on the research outcome such as smiling more in one group
What is randomisation
The use of chance in order to control the effects of bias
What is standardization
Using exactly the same procedures and instructions for all participants
Name the types of experimental design
Independent groups, repeated measures and matched pairs
What is the independent groups design
two sperate groups experience two different conditions. They do not experience both conditions
what is the repeated measures design
all participants experience both conditions
What is the matched pairs design
participants are matched on relevant pieces of information for example IQ, age, height and then put into different groups who experience different conditions
Advantages of independent design
Avoids order effect
negatives of Independant desing
participant variables can distort result - dealt with by using random allocation
Less expensive
Advantages of repeated measures design
no participant variables
disadvantages of repeated measures design
repeated measures effect - dealt with using counterbalancing, order acts as a confounding variable
Demand characteristics as it beco es easy to work out the study
what is counter balancing
A-B B-A
Advantages of matched pairs desing
avlids participant variables
No order effects or demand characteristics
Disadvantages of matched pairs desing
very expensive
Difficult
What are the types of experiments
laboratory, quasi, natural, field
what is a lab experiment
experiment conducted in a very highly controlled setting. Does not have to be in a lab could be a classroom etc
what is a field experiment
an experiment which takes place in a more natural setting
advantages of a lab experiment
High level of control over variables
Can do cause and effect
Replication is easier