However, research results on the effects of input enhancement on form
learning are mixed and contradictory. For example, White (1998) found that typographically
enhanced input in reading passages could help French-speaking learners
of English to improve their use of possessive determiners, although there was little
difference between the experimental group and the control group, which received
no such enhanced input. Lee (2007) also found that textual enhancement facilitatedlearning of the target feature, English passive voice. Similarly, Simard (2009) examined
the effects of different kinds of enhancement and found that learners receiving
capital letter enhancement obtained the highest scores and performed significantly
better than those receiving other enhancement formats.