The effects of the methylxanthines on neural functioning arise from their structural similarity to the neurotransmitter
a. adenosine.
b. acetylcholine.
c. adrenaline.
d. norepinephrine.
e. glutamate.
Answer: A
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A team of researchers has developed a structured interview to diagnose a new type of personality disorder. A series of trials to check the reliability of the structured interview yields a kappa of .75. How should the researchers view this result?
a. The kappa is so low they decide to abandon the project. b. The kappa is not at an acceptable level but encouraging for a new instrument that can be improved. c. Kappa is not the appropriate measure to be used when evaluating the reliability of a new diagnostic category. d. The kappa is at an acceptable level for well-established diagnostic instruments, so the interview is ready to be used in clinical settings.
A repeated-measures study with a sample of n = 16 participants produces a repeated-measures t = 2.00 . If effect size is measured using r2, then r2= 4/20
Indicate whether the statement is true or false
The highest intellectual performance is evident when
a. children with low potential have enriched environments. b. children with moderate potential have average environments. c. children with moderate potential have enriched environments. d. children with high potential have enriched environments.
Dyslexia is the most commonly diagnosed learning disability.
Answer the following statement true (T) or false (F)