Cubo de Severino et al. (2008) start their analysis of these strategies by claiming that expert readers build up the meaning of the text offering their knowledge of the world, not only the one referred to content but also the grammatical and textual ones, regulating their cognitive processes. The acquisition of the written code allows readers to decode words and symbols as well as textual and paratextual elements in order to obtain coherence in the text. Van Dijk and Kintsch model distinguishes different levels within a text: morphological, syntactical, semantic, pragmatic and lexical (pp. 212-213).
The latter consists of a linguistic system in the readers’ mind which contains the lexicon, a phonological component dealing with the sounds and a semantic component dealing with the meanings. Emmorey and Fromkin (as cited in Cubo de Severino et al. 2008) support this idea by stating that the mental lexicon is the grammatical component which carries all the information about the words or morphemes: phonological, morphological, semantic and syntactic information about words (p. 224).
Cubo de Severino et al. (2008) distinguish two types of words: the lexemes, and the grammatical words. The former are units of lexical meaning such as nouns, adjectives, verbs and adverbs. They can also have attached morphemes which are the minimum units which carry lexical or grammatical meaning through suffixes and prefixes. The latter are considered independent and empty words which lack a lexical meaning. They are also called functional words (p. 216).
Following these ideas, Cubo de Severino et al. (2008) assure that the previous knowledge of the topic and the understanding of key words in texts optimize the comprehension of the reading process. That is the reason why understanding how the mental lexicon operates is crucial in comprehension. The authors highlight a number of lexical strategies which aid in the development of metacognitive capacities. They are classified into five groups:
- Use of semantic characteristics: design of semantic maps, charts in order to integrate the new word with the stored information in the readers’ mind.
- Use of context: search of semantic elements in the text which are equivalent, complementary or descriptive in relation to the given unknown word.
- Analysis of word components: associations of lexical items using family of words, suffixes and prefixes among others.
- Recognition of words: use of a phonological, morphological, syntactic, semantic or pragmatic processing to decode the word.
- Use of reference material: search of conceptual information which cannot be given by the text or mental lexicon in dictionaries, encyclopedias and text books.
Lewis (1997) claims that language consists of lexical chunks which can produce continuous coherent texts when combined together (p. 7). The author explains that an elemental lexicon consisting of individual words is not adequate to make readers functionally effective to tackle texts. He supports the idea that accurate
noticing of lexical chunks, grammatical and phonological patters “all help convert input into intake, and provide the central strategy of the Lexical Approach” (p. 53). Consequently, a sixth classification needs to be added: recognition of lexical chunks. McCarthy (as cited in Lewis, 1997) expresses that “Over-concentration on learning single words may hinder the development of the L2 phrasal lexicon and deny the opportunities this gives for rapid retrieval and fluent connections” (p. 56). Likewise, the development of foreign language vocabulary might be affected negatively by overconcentration on learning lexical items in isolation.
Oxford (Oxford, 1990) acknowledges that research has shifted from what students learn to how the process of learning occurs. That is the reason why it may be crucial to focus teachers’ attention on the training of the aforementioned reading strategies to acquire reading skills in ELT.