Final answer:
The phenomenon described in the question is context-dependent memory, which suggests that when information is presented in a meaningful context, it improves memory recall. Research by Henkel (2004) and other studies have shown that strategies like visualization, saying words out loud, and using mnemonic devices can enhance memory and improve studying efficiency.
Step-by-step explanation:
The phenomenon described in the question is known as context-dependent memory. Research by Henkel (2004) suggests that when information is presented in a meaningful context, such as visualizing objects or saying words out loud, it improves memory recall. This is because the context provides cues and associations that help encode and retrieve the information effectively.
Hence, when participants in Henkel's study were asked to recall sentences after performing tasks like counting backwards or associating words with objects, their memory performance improved compared to simply writing down sentences. Similarly, in other studies mentioned, strategies like using mnemonic devices or creating meaningful associations have been found to enhance memory and improve studying efficiency.