Which of the following represents the same idea for physiological instruments as reliability does for psychosocial instruments?
a. Accuracy
b. Precision
c. Selectivity
d. Sensitivity
ANS: B
Reliability is concerned with the consistency of the measurement technique. Precision is the degree of consistency or reproducibility of measurements using physiological instruments. Thus precision is comparable with reliability.
Accuracy is connected with the validity of the instrument.
Selectivity has to do with whether an instrument can measure what the researcher wants while only measuring what the researcher wants.
Sensitivity refers to the ability of an instrument to detect minute changes between measures and/or subjects.
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