Which of the following scenario poses a serious problem when using a paired-samples t test, one-tailed?
A. The population of difference scores is approximately normal.
B. The sample has less than 40 participants.
C. There is a ceiling effect in the test, which is likely to make the population of difference scores highly skewed.
D. Pretest and posttest scores are highly correlated with each other.
Answer: C
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The definitional approach to categorization
a. is not well suited for geometrical objects but works for familiar everyday objects. b. sets definite criteria called family resemblances that all category members must have. c. doesn't work well for most natural objects like birds, trees, and plants. d. was proposed to replace the prototype approach.
Answer the following statement(s) true (T) or false (F)
A Greek term for wisdom, phronesis, refers to using wisdom in a practical sense.
After an accident, Kim notices a sharp, pricking pain in her foot. Which type of nerve fiber is involved in Kim's pain?
A. A-delta B. B-omicron C. C-gamma D. D-beta
The concept that genotypes are not the only things that control traits involves the fact that
A. dizygotic twins are virtually genetically identical. B. each genotype can produce a variety of phenotypes. C. recessive genes are more commonly expressed than dominant genes. D. the environment has little impact on behavior.