The human mind is capable of amazing feats of intellegence and deduction, but it can also succumb to the the distortions of hindsight bias, overconfidence and misperception. To combat these distortions, rely on descriptive, correlational, and experimental methods to answer psychological questions.
To research, scientists use the Scientific method. The heart of this method is a reliance an operational definitions.
0= NO CORRELATION
CORRELATION VS CAUSATION
Positive means direct correlation
Negative means inverse correlation
Correlations go from negative one to positive one
**correlation does not prove causation