experimental methods

Cards (10)

what is a hypothesis 
a precise + testable statement stating the relationship between the variables being investigated states the outcome
what is a directional hypothesis 
states the direction of the difference between 2 conditions/ groups - 'one tailed'
what is a non-directional hypothesis
states the difference between conditions/groups but the nature of the difference is not specified 'two tailed'
what is a variable 
any 'things' able to vary/change within an investigation
what is the independent variable 
the aspect of the situation manipulated by the researcher
what is the dependant variable 
the variable measured by the researcher
what is operationalisation  
clearly defending variables in terms of how they can be measured
which kind of words are in a directional hypothesis 
more
less
higher
lower
faster
slower
how do you decide which hypothesis to use post-experiment
d: when findings of previous research studies suggest a particular outcome
nd: when there no previous research of findings from earlier studies are contradictory
what is an aim 
a general statement of what the research intends to study
the purpose of the study