An economical referee report for some articles

Sorry about the words below, its too hard to copy them to here, so I attached the requirement document and the articles to be commented!

Arefereereportisacriticalpartofthepeer‐reviewprocessinacademicresearch.Whenanarticleissubmittedtoanacademicjournalforpossiblepublication,theeditorofthejournalsendsoutthepapertoseveralexpertswhoarefamiliarwiththetopicandwhocanevaluatethecontributionsandlimitationsofthesubmittedarticle.Eachrefereewritesareport,whichisthebasisforarecommendationtotheeditoronwhethertoacceptthepaperforpublication,tosuggestthattheauthorsreviseandlaterresubmitthepaperforpublication,ortorejectthepaperforpublication.Sinceeachpaperbelowhasalreadybeenpublished,youdonotneedtoprovidethissummaryrecommendation,butyourreportshouldconsistofallofotheraspectsofarefereereport.Yourreportisintendedfortheauthorsofthepaper.Itshouldbeapproximatelythreedouble‐spacedpagesinlength,anditshouldincludethefollowingparts:2Asummaryofthepaper,whichdiscussesthemainresearchquestion(s),themethodologyusedbytheauthors,andtheconclusionsandcontributionsofthepaper.Adiscussionofwhetherthequestionorquestionsaskedareimportant(ornot)and whether you find the paper convincing or not(andwhy?)Discussion Of The Concerns Havewiththepaper.Theseconcernscouldberelatedtothedatabeingused,theempiricalmethods,sampleselectionissues(do the data seem to be a representative sample?),possiblealternativeexplanationsfortheresultsthattheauthorsdonotconsider(ordo not consider sufficiently),andanyotherweaknessesofthepaper.Finally,arefereereportismeanttobe constructive criticism,so,whenever possible,providepossiblesuggestionsfor improvement.