PSYC1111 Lecture Notes - Lecture 3: Environmental Factor, Twin, Zygote
Document Summary
Positive correlation as one goes up, other goes up vice versa. Negative correlations video games and gpa negative correlation (-0. 36) tells you that as one goes up, the other goes down not arithmetic. Likely midterm question which of these four correlations shows the smallest or weakest relationship between two variables: 0. 42, 0. 17, -0. 30, -0. 76 -> this is a very strong relationship absolute value is the only thing that matters. Scatterplots -> understand this in the textbook line of best t, di erent correlations zero correlation would be a at line (horizontal line) positive correlation is a line going up negative correlation is a line going down. Darwin"s model modi ed descent through natural selection the original species gets modi ed -> resulting in di erent species contrasts creationist view that all species were created di erently random genetic variation environment changing puts di erent pressures. Inheritance how do we study it? need an index of genetic similarity.
