21. Learner metacognition is defined and investigated by examining their person knowledge, task knowledge and strategy knowledge. 22. A 2007 study has provided some evidence for metacognition in rats, although this interpretation has been questioned. 23. Educators can employ Cognitive Strategy Instruction ( CSI ) as a means to help learners develop their metacognition . 24. Metamemory, defined as knowing about memory and mnemonic strategies, is an especially important form of metacognition . 25. RCs help individuals to implement a sequence of thoughts that allow them to go over their own metacognition . 26. A 2007 study found rats to possess metacognition , a mental ability previously only documented in humans and some primates. 27. Both executive management and strategic knowledge metacognition are needed to self-regulate one's own thinking and learning. 28. During the reign of behaviorism in the mid-20th century, unobservable phenomena such as metacognition were largely ignored. 29. :: : : : Theory of mind is a clunky phrase for what is probably better described as metacognition . 30. Some evolutionary psychologists hypothesize that metacognition is used as a survival tool, which would make metacognition the same across cultures.