section 1 Flashcards
what is peer review?
involves scientists peers, who have expertise in the field, evaluating the methods and conclusions of the research
what is pseudoscience?
a set of ideas driven by ideological, cultural, or commercial goals, presented as scientific, although they are not.
what is a scientific law?
it describes something that happens without exception and has been established by repeated testing. often describes mathematical relationship between 2 or more measured variables
what is a theory?
it explaiins existing observations and predict new ones
what is a scientific theory?
its a theory supported by evidence, and has been proven beyond reasonable doubt by repeated testing of hypothesis.
what does parismony
preference for the least complicated explaination for an observation (simplest)
what is falsifiability
the posibility to make an observation that would show that the theory is wrong
what is a hypothesis
working assumption
what is a null hypothesis
no relationship between 2 variables
one tailed hypothesis
a directional prediction, which specifys the nature of the relationship between the variables. a directional hypothesis should only be made if it is based on a well researched theory, or it is based on previous research showing consistent trends. if in doubt made the hypothesis 2 tailed. one tailed hypothesis specify the direction of direction. ie. mean of A> mean of B. or a positive relationship etc.
two tailed hypothesis
non-directional prediction, which only states that a relationship between 2 varibes exists. this doesn’t show the direction but a difference. eg. there is a relationship between between testosterone levels and aggression.
alternative hypothesis
states that a relationship between 2 variables exists
what is a variable
anything that varies that can be measured
I.D.
experimental change
D.V
measured change