The 2 best rated techniques were:
Practice testing – Self-testing or taking practice tests on to-be-learned material.
Distributed practice – Implementing a schedule of practice that spreads out study activities over time, versus being massed in a short period of time
Low utility: Summarization, highlighting, the keyword mnemonic, imagery use for text learning, and rereading.
Moderate utility: elaborative interrogation, self-explanation, and interleaved practice.
Highly effective: Practice testing and distributed practice.