Contrary to conventional educational testing, in so-called dynamic assessme
nt subjects are allowed to consult help during testing or are offered prior
training. The differential results of both testing procedures are sometime
s ascribed to the idea that dynamic tests reflect the breadth of the zone o
f proximal development on top of independent achievement. Alternative expla
nations claim that conventional tests are more strongly biased towards vari
ous characteristics of persons, which have a negative influence on performa
nce, when compared to dynamic tests. In this study, it was hypothesised tha
t static as well as dynamic assessment is biased towards anxious tendencies
of subjects, but the former more strongly than the latter. In order to inv
estigate this supposition, the performance of subjects on dynamic and stati
c tests was systematically compared and related to measures of test anxiety
in a longitudinal experiment. In the experiment, repeated measures of inde
pendent mathematics achievement as well as mathematics learning potential w
ere gathered among students of secondary education in the Netherlands. Prio
r to every mathematics test, subjects filled out a test anxiety questionnai
re. After every mathematics test, subjects filled out a general state anxie
ty questionnaire. The participating subjects were students from secondary e
ducation, either preparing for higher vocational training or University, ag
ed approximately 15 years on average.
The results of the experiment showed that lack of self-confidence is an imp
ortant constituent factor of test anxiety, apart from worry and emotionalit
y. The data supported the assumption that such testing procedures are less
biased towards anxiety than conventional tests, but it was not established
that dynamic testing procedures render results that are not biased by test
anxious tendencies.