Vocabulary is the fundamental aspect of language teaching learning and testing. In addition to the traditional classical methods of measuring vocabulary levels the Lexical Frequency Profile (LFP) a tool developed by Luafer and Nation (1995) is also used as a new method of measurement. While the LFP has been accepted by some researchers it has been criticised by others.
As a controversial issue the LFP needs to be evaluated in terms of its validity and reliability. In this book the model is reviewed by an award-winning researcher using the meta-analysis method.