1. Go to one of the following sites and take the Ice Cream Personality Test. Note the claims the test makes about the relationships between  ice cream preferences and personality.

·         www.personalityquiz.net/foodtests/icecream.htm

·         http://www.icecream.com/funfacts/index.asp?b=104

·         http://www.angelfire.com/ga/sweetgeorgiapeach/icecream.html

·         http://www.panix.com/~clp/humor/tests/ice-cream.html

·         http://www.squidoo.com/icecreampersonality

            2. Ask at least 5 people, the following two questions.

    1. Which of the following six descriptions best describes your personality?

1. Colorful, impulsive, a risk taker who sets high goals and has high expectations of yourself. You also enjoy close family relationships. Gregarious, lives a hectic life. Easily suggestible, expressive, idealistic; a private person.
   Prototype: Lovelorn housewife.
2. Lively, creative, dramatic, charming, enthusiastic and the life of the party. Enjoy being at the center of attention and can become bored with the usual routine. Seductive, well-dressed, extroverted, easily influenced, a follower, intuitive, enjoys intimate relationships.
   Prototype: Feminine woman, macho man.
3. Orderly, perfectionist, careful, detail-oriented, conscientious, ethical and fiscally conservative. You are also competitive, aggressive in sports and the take-charge type of personality.
   Prototype: Executive, secretary.
4. Easy going, well adjusted, generous, honest and empathetic.
   Prototype: The perfect husband, wife, parent or child.
5. Shy, yet emotionally robust, skeptical, detail-oriented, opinionated, introverted and self critical. Easily made to feel guilty; cranky, pessimistic, low self-esteem.
   Prototype: Bureaucrat, journalist.
6. Generous, competitive and accomplished. You are charming in social situations, ambitious and competent. A visionary, a conqueror, enjoys being catered to, a go-getter, intolerant of defeat.
   Prototype: Industry leaders, voted most likely to succeed in school.

    2. Of the following six ice cream flavors, which one do you prefer?

                            a. vanilla,

                            b. chocolate,

                            c. butter pecan,

                            d.  banana,

                            e.strawberry, or

                            f. chocolate chip.

            To evaluate the validity of the test, use the grid below to see whether self-descriptions relate to ice cream preferences. For example, if someone chose “a” as describing themselves (e.g., they viewed themselves as “colorful, impulsive, a risk taker…”  and their favorite ice cream flavor was vanilla, you would put a tally mark in the first row of the first column. If, on the other hand, their favorite flavor was chocolate, put a mark in the second row of the first column.                       

 Suppose you had 30 participants and the ice cream test was perfectly valid (all 5 people who described themselves as colorful preferred vanilla, all five lively people preferred chocolate, etc.). In that case, your table would resemble the one below.

Use any of the following chi square calculators to see whether the test has any validity.

http://home.ubalt.edu/ntsbarsh/Business-stat/otherapplets/Catego.htm

http://www.physics.csbsju.edu/cgi-bin/stats/contingency_form.sh?nrow=6&ncolumn=6

http://people.ku.edu/~preacher/chisq/chisq.htm

http://www.opus12.org/Chi-Square_Calculator.html

Windows program that will analyze your data. (need to download on to your computer)

To estimate test-retest reliability, re-administer the test to your friends next week. Chart the results in the table below. Then, input the data from that table into one of the chi square calculators listed above.

Is the Ice Cream Test reliable?

Is the Ice Cream Test valid?

Could the Ice Cream Test be valid but not reliable?          Why or why not?

Could the Ice Cream Test be reliable, but not valid?    Why or why not?