The full version of MyCore is comprised of approximately 2.000 different words (basic form). In addition to the words acquired from the word frequency lists,

• AAC specific vocabulary (e.g. new topy, no symbol, yes/no question),
• hot phrases to control the conversation (e.g. How are you?, I don’t know. ) and
• developmental vocabulary to extend communicative competence (e.g. preposition and adverbs are useful in German to extend the beginning verb lexicon, Penner et al., 1999)

are included.

It is, of course, possible to also add and save relevant individual vocabulary as well as messages.

For some AAC users the full version with 2.000 words might be too complex. Therefore, a reduced version of MyCore is provided. The reduced version contains around 800 words and less grammar functions (e.g. nouns: only singular and plural, no other cases). A unique feature is, that all words provided in the full version are only marked as invisible in the reduced version. This feature has the following advantages:

1. The hidden vocabulary and grammar can gradually be made available according to the individual needs of the AAC user.

2. The position of vocabulary and grammar stays the same even as the vocabulary expands, thus facilitating automatic use (using the same motor plan).

3. Individually added vocabulary remains in the system and does not need to be added and saved again with the expansion of vocabulary.

The vocabulary and grammar functions can expand and grow alongside the abilities of the user, always containing a few more words and functions than are currently being used by the AAC user, in order to support language development.

It is recommended to ensure an early access to the full version to facilitate rather than limit language experiences.