Some are restricted for use by speech and language professionals (therapists or SALTs in the UK, speech-language pathologists, SLPs, in the US and Australia). A commonly used test battery for diagnosis of SLI is the Clinical Evaluation of Language Fundamentals (CELF).
Noun. (plural push factors). 1  A factor that leaves one with no choice but to leave one's current home (especially parental home), country, region, organization, or religion. 2  Link/Cite.
growth factor. n. A substance that affects the growth of a cell or an organism. growth factor. n. (Biochemistry) any of several substances present in serum that induce growth of cells. Excessive amounts of growth factor may be associated with the production of cancer cells. growthâ² fac`tor.