Final answer:
Devoting more time to memorizing challenging info and skimming over less challenging info is an example of passive reading. It may lead to poor understanding and difficulties in recalling information. Efficient study strategies include elaborative rehearsal, distributed practice, and rehearsal over time.
Step-by-step explanation:
Devoting more time to memorizing more challenging information for an exam and skimming over less challenging information is an example of passive reading. Passive reading involves reading for the 'gist' rather than substance, which means not giving the reading undivided attention.
This method of studying may not be very effective in the long run as it can lead to poor understanding of the material and difficulties in recalling the information when needed.
To study efficiently, it is recommended to use strategies such as elaborative rehearsal (processing information deeply and making meaningful connections), distributed practice (studying across time in short durations), and rehearsing the material over time with spaced and organized study sessions.