Scientific Method

Question 1

Scientific method steps

Answer 1

Observation of physical world, formulate a hypothesis (educated guess), experimental design, predictions, perform experiment, gather data, analyze data to see if hypothesis supported, rework hypothesis start again

Question 2

Criteria for a good hypothesis

Answer 2

Testable and falsifiable

Question 3

Control group

Answer 3

Independent variable is not varied/not given to this group, can involve placebo

Question 4

Control Variables

Answer 4

Variables that stay the same across all experimental groups.

Question 5

Purpose of control variables and groups

Answer 5

Provide a neutral base for data collection so the IV’s effect on DV is made apparent and to Isolate the IV. They also exist to reduce bias.

Question 6

Placebo

Answer 6

Non active substance, no physical effect on participants, similar in appearance to what is being tested.

Question 7

Purpose of Placebo, Blind and Double Blind

Answer 7

To reduce bias, isolate IV and its impacts on the experimental group

Question 8

Hypothesis vs Theory

Answer 8

Singular testable educated guess. Theories are formed from many different hypotheses which are well researched and well supported

Question 9

4 criteria for scientific study

Answer 9

good research design/technique w proper controls, large sample size, repeatability, publication is scientific journal + peer reviewed

Question 10

3 Central Bio Theories

Answer 10

Gene, Cell, Germ