Adaptive and intelligent instructional systems are used to deal with the issue of learning personalisation in contexts where human instructors are not immediately available, so their role is transferred entirely or in part onto the computer. Even though such systems are mostly developed for well-defined domains that have a rather straightforward…

Reviews existing examples of computer-assisted vocabulary learning and suggests some principles for the future design of such programs. The issues considered are the extent to which the program is specifically oriented to vocabulary learning, what gives the interaction its instructional value, and what makes an interaction specifically…