Evolutionary biologists often start with an observation about some characteristic and then try to account for it in evolutionary terms. How might they explain the difference in the plumage of male peacocks when compared to the females?
What will be an ideal response?
A good answer will include the following key points:
• During the history of the species, males who could put on the flashiest display got the attention of females.
• Such males therefore had a better chance of reproducing and passing on the genes for their plumage.
• Females, on the other hand, did not have to attract the males' attention so they didn't need colorful plumage.
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Balance theory predicts that tension is greatest when group members
a. do not know if they like or dislike each other. b. agree with each other and like each other. c. disagree about what procedures to use. d. disagree with each other and like each other. e. dislike each other.
Discuss the role of technology in adolescent cognition and types of technology that adolescents typically use. How may it further adolescent cognitive development? How may it limit adolescent cognitive development?
What will be an ideal response?
Infants that panic when the caregiver leaves them are ____
a. anxious/ambivalent infants c. avoidant infants b. secure infants d. inconsistent infants
Hypertension contributes to many fatal diseases and has been called the __________________ because there are few-if any-symptoms and most people don't know they have it.
A. "undiscovered disease" B. "silent killer" C. "jack-of-all-diseases" D. "hidden disease"