When we can generalize from the sample used in a study to the population of interest, we say that the study has _____ validity
a. internal
b. external
c. construct
d. content
b
You might also like to view...
Which child is demonstrating precausal thought?
A. Amy states, "The rain falls out of the sky so I can have a drink of water." B. Gavin asks, "Daddy, did you build that tree in front of our house?" C. Timotea states, "Stars shine because they are afraid of the dark." D. Elvin states, "I swim because it is summer."
Drinking for the Japanese in the U. S. have been found to:
a. increase for Japanese men b. increase for Japanese women c. decrease for Japanese women d. a & c
Which statement about infant-directed speech (IDS) is true?
A. Deaf parents use a style of communication similar to IDS when signing to their deaf babies. B. Infants do not begin to prefer IDS over other kinds of adult talk until age 2. C. IDS is less effective at building language skills than other forms of speaking because it reinforces grammatical misconceptions. D. IDS is more effective when used with the infant and another adult present than it is with the infant alone.
Why does stress divert energy away from the immune system?
A) Responding to stress stimulates the sympathetic nervous system, which diverts energy from the immune system to the muscles and brain. B) Stress causes the body to secrete less cortisol, which is a necessary stimulant for increasing the energy level of the immune system. C) Responding to stress activates the central nervous system, which in turn momentarily shuts off all functioning in the immune system. D) Stress causes red blood cell counts to rise, which in turn causes white blood cell counts to fall dramatically.