Psych Reading Part 4 Unit 2 Flashcards
What is correlation?
The relationship between two of more variables. DOES NOT IMPLY CAUSE AND EFFECT.
What is correlation coefficient?
A number from -1 to +1, which shows the direction of the data. Closer variable is to one, the more stronger is its relationship. 0 is not strong.
What is positive correlation?
Variables move in positive direction.
What its negative correlation?
Variables move in negative direction.
What is illusory correlations?
False correlations.
What is confirmation bias?
Looking for info to support theory rather than the info that rejects it.
What is operational definition?
Precise description of variables.
What is experimenter bias?
Experimenters expectations skew results.
What is a single-blind study?
One group of participants is unaware they are in experimental group but researchers are aware.
What is double-blind study?
Both researchers and participants are blind.
What is random sample and random assignment?
Random sample is a sample in which every member of the population has a chance of being chosen. Random assignment is there is equal chance of everyone either being assigned to experimental or controlled.
What is statistical analysis?
See if there are meaningful connections between two groups.
What is peer reviewed?
Allows other scientists to replicate experiment.
What is two essentials to a lab?
Reliability (consistent results) and validity (tools accurately measure)
What is distribution?
pattern of variance in data
