Ever Had a Bad Hair Day?

Science World, Sept 18, 2000 by Miguel Vilar

Trials: number of times an experiment is repeated for each level, or value, of the independent variable. The more trials, the more reliable your results.

Bad Hair Day

Directions: Fill in the blanks with the correct words.

1. The first step in the scientific method is to make an --.

2. Psychologist Marianne LaFrance studies how physical appearance affects your -- or --.

3. LaFrance tested her hypothesis by designing and conducting an --.

4. In her study, she used a step-by-step --.

5. Her study was--volunteers didn't know the purpose of the study.

ANSWERS

1. observation 2. mood, self esteem 3. experiment 4. procedure 5. blind