Yeah, all that help me so much.

Thanks!

Hi.

The official term is "Helplessness, Learned"[Mesh] (See: http://www.ncbi.nlm.nih.gov/mesh/?term=Learned+helplessness)

So, for systematic review you can type on PubMed: "Helplessness, Learned"[Mesh] AND systematic[sb]

For meta-analysis type: "Helplessness, Learned"[Mesh] AND Meta-Analysis[ptyp]

http://www.ncbi.nlm.nih.gov/pubmed?term="Helplessness%2C%20Learned"%5BMesh%5D%20AND%20systematic%5Bsb%5D&cmd=DetailsSearch

http://www.ncbi.nlm.nih.gov/pubmed?term="Helplessness%2C%20Learned"%5BMesh%5D%20AND%20Meta-Analysis%5Bptyp%5D&cmd=DetailsSearch

Thanks Valter, i didnt know that search (mesh) in pubmed. 

What meaning "[sb]" and "[ptyp]"?

[sb] and [ptyp] they are filters. sb =Subsets; ptyp =Publication Type 

systematic[sb] is equal to:

(systematic review [ti] OR meta-analysis [pt] OR meta-analysis [ti] OR systematic literature review [ti] OR this systematic review [tw] OR (systematic review [tiab] AND review [pt]) OR meta synthesis [ti] OR meta synthesis [ti] OR integrative review [tw] OR integrative research review [tw] OR rapid review [tw] OR consensus development conference [pt] OR practice guideline [pt] OR cochrane database syst rev [ta] OR acp journal club [ta] OR health technol assess [ta] OR evid rep technol assess summ [ta] OR drug class reviews [ti]) OR (clinical guideline [tw] AND management [tw]) OR ((evidence based[ti] OR evidence-based medicine [mh] OR best practice* [ti] OR evidence synthesis [tiab]) AND (review [pt] OR diseases category[mh] OR behavior and behavior mechanisms [mh] OR therapeutics [mh] OR evaluation studies[pt] OR validation studies[pt] OR guideline [pt] OR pmcbook)) OR ((systematic [tw] OR systematically [tw] OR critical [tiab] OR (study selection [tw]) OR (predetermined [tw] OR inclusion [tw] AND criteri* [tw]) OR exclusion criteri* [tw] OR main outcome measures [tw] OR standard of care [tw] OR standards of care [tw]) AND (survey [tiab] OR surveys [tiab] OR overview* [tw] OR review [tiab] OR reviews [tiab] OR search* [tw] OR handsearch [tw] OR analysis [ti] OR critique [tiab] OR appraisal [tw] OR (reduction [tw]AND (risk [mh] OR risk [tw]) AND (death OR recurrence))) AND (literature [tiab] OR articles [tiab] OR publications [tiab] OR publication [tiab] OR bibliography [tiab] OR bibliographies [tiab] OR published [tiab] OR unpublished [tw] OR citation [tw] OR citations [tw] OR database [tiab] OR internet [tiab] OR textbooks [tiab] OR references [tw] OR scales [tw] OR papers [tw] OR datasets [tw] OR trials [tiab] OR meta-analy* [tw] OR (clinical [tiab] AND studies [tiab]) OR treatment outcome [mh] OR treatment outcome [tw] OR pmcbook)) NOT (letter [pt] OR newspaper article [pt])

Thanks again Valter.