Corrections - Paper 2

Question 1

difference between extraneous V and confounding V

Answer 1

EV: variables other than IV that may affect DV
CV: variables that actually do effect the DV and vary systematically with the IV - becomes unclear whether changes in the DV are due to the IV or CV

Question 2

difference between natural and quasi experiment

Answer 2

natural : IV exists due to change in environment or an event e.g. institutionalisation
quasi: IV is pre-existing and doesnt require manipulation e.g age

Question 3

ao3 of natural vs quasi

Answer 3

natural
+ allows for the study into variables that would be unethical to manipulate e.g. neglect of institutionalised children
- confoudning variavles of participants

quasi
+ pre-existing groups so less sorting required
- lacks random allocation + CV

Question 4

correlation

Answer 4

a statistical technique used to measure the strength and direction between two co variables