What effects does sense of smell have on an infant?
What will be an ideal response?
Within the first days of life, newborns detect and recognize their mother's odor. Infants are calmed by their mother's scent. Newborns who smelled their mother's odor displayed less agitation during a heel-stick test and cried less afterward than infants presented with unfamiliar odors. Familiar scents are reinforcing and can reduce stress responses in infants.
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One sample has n = 10 scores and a variance of s2 = 20, and a second sample has n = 15 scores and a variance of s2= 30 . What can you conclude about the pooled variance for these two samples?
a. It will be closer to 20 than to 30. b. It will be closer to 30 than to 20. c. It will be exactly halfway between 20 and 30. d. Cannot be determined without more information.
Which of the following is an advantage of group therapy used by psychotherapists?
A) It allows the therapist to work with several clients at once. B) It guarantees that people reveal their personal problems to group members. C) It ensures that people from the same family are not included in the same group. D) It allows the therapist to facilitate one-to-one therapy without making the client feel lonely.
When compared with heterosexual men's speech, gay men's speech more commonly includes the use of "qualifying adjectives," a wider-than-usual pitch range, extended vowel length speech, a tendency to avoid reduced forms of speech, and a greater likelihood of arm and hand gestures
Indicate whether the statement is true or false
When describing factorial designs, researchers use a shorthand notation like 2 × 2 or 3 × 5. For
this notation, the number of digits refers to the number of ________, and the value of the digits refers to the number of ________. A) IVs; levels of each IV B) IVs; DVs C) levels of each IV; IVs D) groups; IVs E) groups; DVs