Brittany:

They are very effective as children develop their social and cognitive skills quicker but we must minimize the use of technology for those under 3 yrs due delayed development effects. Here's a link to related studies in RG.

Best regards,

Debra

https://www.researchgate.net/publicliterature.PublicLiterature.search.html?type=keyword&search-keyword=Early+Years+Programs+effects+of+poverty+on+children%27s+cognitive+and+social+development&search-abstract=&search=Search

Most well -funded intervention and enrichment programs have shown improvements and gains for children living in poverty situations. However,  teacher training is crucial for positive  results  to occur! Providers must know  HOW to enhance early language skills in both oral contexts and in engendering a  passion for books and  HOW to provide richly engaging  emergent literacy experiences. A teacher  must know how to choose books for the level  and the interests of a child, who for example has not been read to, or  has heard mostly orders  and scolding  and criticism rather than  richly positive reinforcing language  from household adults. A teacher must know how to use chanting and music and rhyming games to  entrance little ones into a love of language and  the motivation to make gains in language power.   Researches show that children who do not learn to read fluently by 3 or 4th grade have a  significantly greater risk of dropping  out of school in later grades.   Researches show the importance of teachers using words connected with experiences, using  Socratic Questions,  using  rich vocabulary, snuggling individually with a  young child daily to induce a love of stories and book learning . Thus, these are all skills a teacher must learn and practice  intentionally daily. Without these skills, even a warm, cheerful teacher can feel frustrated and unable to  help  a child  to make up for the language delays in  that child's  development if that child has had a paucity of positive  oral language and early literacy experiences in the home.

Read on early stimulation and early childhood programmes in Jamaica

Researches published by Dr. M. Samms-Vaughn may help.