For which of the following methods of contraception is the difference between the perfect-use and typical-use effectiveness rates the highest?
a) the IUD
b) the pill
c) tubal ligation
d) vasectomy
ANS: B, Methods like the IUD or surgical methods have lower failure rates than methods that require effort and attention on the part of the user, such as condoms, the pill, and fertility awareness.
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Strategies designed to enhance memory through the use of either verbal cues or visual imagery to enrich encoding are termed
a. acronyms. b. mnemonic devices. c. methods of loci. d. serial-position identifiers.
Contemporary research suggests that Piaget identified fairly accurately ________ of major cognitive developmental milestones.
A. both the sequence and the age-related timing B. the sequence but not the age-related timing C. the age-related timing but not the sequence D. neither the sequence nor the age-related timing
What are the primary differences between pseudoscience and science?
What will be an ideal response?
One function of the specialized protein channels in a cell membrane is to ______.
A. form an impermeable barrier to all substances foreign to the cell B. package neurotransmitters C. provide oxygen and nutrients for the cell D. selectively allow substances to enter or leave the cell