Some Observations on the Reliability of Measures Used in Reading and Typographic Research
James R. Hartley, Susan Fraser, Peter Burnhill · Journal of Reading Behavior · 1975
This study assessed the reliability of nine different measures used in reading and typographic research. Test-retest correlations were calculated for university students and schoolchildren, both male and female. It was clear that some measures were more reliable than others: for example, oral reading was highly reliable, but comprehension was not. The results are discussed with reference to the objectives of different types of measure.