In One Study,Paul Ekman and Colleagues (1987)secretly Videotaped American and Japanese

question 57

Multiple Choice

In one study,Paul Ekman and colleagues (1987) secretly videotaped American and Japanese students as they watched repulsive film clips.In one condition,a researcher was present while the students watched the clips; in another condition,no researcher was present.In this experiment,the researcher's presence was a(n) _____ variable.

• A) control
• B) dependent
• C) experimental
• D) independent

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Definitions:

Chromosome Sets

The complete set of chromosomes present in the nucleus of a cell or organism, usually occurring in pairs in diploid organisms.

Gametophyte

The haploid stage in the life cycle of plants and algae that produces gametes (sex cells) through mitosis.

Sporophyte

Spore-forming diploid body that forms in the life cycle of land plants and some multicelled algae.

Xylem

A type of vascular tissue in plants responsible for the transportation of water and nutrients from the roots to various parts of the plant.