When talking about the perception of body movement (kinaesthesia) textbooks make claims like:
Studies using active tasks [i.e. where the subject moves by themselves, rather than letting an experimenter move it] confirm that development [of kinaesthesia] is slow in comparison with other senses, with competence by about six years (slightly earlier than indicated using passive tasks).
Should you believe this? I look at:
Smothergill (1973). Accuracy and variability in the localisation of spatial targets at three age levels. Developmental Psychology, 8(1), 62–66.
To find out