RESULTS	Participants in the GEL condition performed significantly better than those in the ELT condition on the overall checklist score after controlling for individual practice time ( F [ 1 , 29 ] = 4.021 , P = .027 , Cohen 's d = .71 ) , had higher pass rates ( P = .006 , Cohen 's d = 1.15 ) , and had lower rates of failure due to critical action errors ( P = .038 , Cohen 's d = .81 ) .\