Dr. rhodes is interested in how differing levels of light affect how people perceive color. he finds participants for this research study by making an announcement in several psychology classes at his university. what kind of sampling method is dr. rhodes using?
(a) snowball sampling
(b) systematic sampling
(c) convenience sampling
(d) cluster sampling

Passing laws, creating courts, and collecting taxes are examples of

The president of american systems announces that all employees will be going on a trip to san francisco. some employees like the idea and some don't. according to the component of attitudes, these evaluations reflect the feelings of the employees.

Janette goes into an electronics superstore to buy a new computer. the salesperson works with her to find the right model, and she agrees to buy a new computer for $500 and a floor-model 18-inch monitor for $100. just when she is ready to pay, the salesperson walks away for a minute and then comes back to inform her that the monitor she was ready to purchase can't be sold for < $125. she agrees to the extra $25 even though they had initially agreed on the $100 selling price. janette has fallen for the technique of gaining compliance.