Chapter 1&3 Flashcards
Quantitative Change
-Changes in the amount or quality of what you are measuring
* Changes in amount
* Continuous
* Examples:
*Height
*# of words
Qualitative Change
-that alter the overall quality of a process or function, and the result is something altogether different
* Changes in form
*Discontinuous
* Examples
* Taking things literally
(Another One Bites the Dust)
* Crawling to walking
Multifinality
different pathways can result in the same outcome
Niche Picking
You choose the environment that suits your genes.
Operational Definition
-the definition of a variable in terms of the actual procedures used by the researcher to measure and/or manipulate it.
*Describing variables in a clear way
*Allow for others to replicate
Replication
- Replication – re-run studies to confirm results
- Importance of clear methodology and analysis
- Why does this matter?
- Policy
- Medicine
What is the Replication crisis?
Why is it happening?
- Researchers unable to
reproduce results
Reliability
consistency
Validity
accuracy (are we
measuring what we are
intending to measure)
Which of the following is a true statement?
You must have reliability to have validity
Experiment
- Allows us the ability to infer
causation - Experimental & Control groups
or conditions - Holding everything else
constant (ideally) - If there is a difference, it is
due to condition/group
Quasi Experiment
*Attempts to establish cause and
effect
*Uses pre-existing
groups/differences
*Not randomly assigned
Correlational Study
▪ NO cause & effect established!
▪The direction and strength of the correlation are indicated
by a statistic called a correlation coefficient
Correlation
r = +.37
Statistical
mathematical indication that the
results are likely not due to chance