Systems and methods for recording instruction sequences in a microprocessor having a dynamically decoupleable extended instruction pipeline. An encoder encodes a transmission data stream into a first bit stream with first priority and a second bit stream with second priority being lower than the first priority. The methods include performing a behavioral test on a subject to measure a psychometric quantity, measuring one or more quality indicators, the quality indicators being any variables that are correlated with test accuracy, obtaining an independent measure of test accuracy, and deriving a predictive formula for estimating test accuracy from the quality indicators.