{"id":29834,"date":"2023-10-10T15:23:30","date_gmt":"2023-10-10T18:23:30","guid":{"rendered":"https:\/\/mindthegraph.com\/blog\/what-is-triangulation-in-research-copy\/"},"modified":"2024-12-05T15:44:14","modified_gmt":"2024-12-05T18:44:14","slug":"quasi-experiment","status":"publish","type":"post","link":"https:\/\/mindthegraph.com\/blog\/lt\/kvazieksperimentas\/","title":{"rendered":"Kvazieksperimentas: Suprasti, kas tai yra, tipai ir pavyzd\u017eiai"},"content":{"rendered":"<p>Kvazieksperimentini\u0173 tyrim\u0173 modeliai sulauk\u0117 didelio pripa\u017einimo mokslo bendruomen\u0117je d\u0117l savo unikalios galimyb\u0117s tirti prie\u017easties ir pasekm\u0117s ry\u0161ius realioje aplinkoje. Skirtingai nuo tikr\u0173 eksperiment\u0173, kvazieksperiment\u0173 atveju dalyviai \u012f grupes neskiriami atsitiktine tvarka, tod\u0117l tam tikrose situacijose jie yra prakti\u0161kesni ir eti\u0161kesni. \u0160iame straipsnyje gilinsim\u0117s \u012f kvazieksperiment\u0173 s\u0105vok\u0105, taikym\u0105 ir privalumus, atskleisdami j\u0173 svarb\u0105 ir reik\u0161m\u0119 mokslo srityje.<\/p>\n\n\n\n<h2 id=\"h-what-is-a-quasi-experiment-research-design\"><strong>Kas yra kvazieksperimentinis tyrimo planas?<\/strong><\/h2>\n\n\n\n<p>Kvazieksperimentini\u0173 tyrim\u0173 modeliai - tai tyrim\u0173 metodikos, pana\u0161ios \u012f tikrus eksperimentus, ta\u010diau be atsitiktinio dalyvi\u0173 priskyrimo grup\u0117ms. Tikrojo eksperimento metu tyr\u0117jai atsitiktine tvarka paskirsto dalyvius \u012f eksperimentin\u0119 arba kontrolin\u0119 grup\u0119, tod\u0117l galima palyginti nepriklausomo kintamojo poveik\u012f priklausomam kintamajam. Ta\u010diau kvazieksperiment\u0173 atveju toks atsitiktinis priskyrimas da\u017enai yra ne\u012fmanomas arba eti\u0161kai neleistinas, tod\u0117l tenka taikyti alternatyvias strategijas.<\/p>\n\n\n\n<h2 id=\"h-types-of-quasi-experimental-designs\"><strong>Kvazieksperimentini\u0173 modeli\u0173 tipai<\/strong><\/h2>\n\n\n\n<p>Egzistuoja kelios kvazieksperiment\u0173 strukt\u016bros, skirtos tirti prie\u017eastinius ry\u0161ius konkre\u010diomis aplinkyb\u0117mis. Keletas da\u017eniausiai pasitaikan\u010di\u0173 tip\u0173 yra \u0161ie:<\/p>\n\n\n\n<h3 id=\"h-non-equivalent-groups-design\"><strong>Nelygiaver\u010di\u0173 grupi\u0173 dizainas<\/strong><\/h3>\n\n\n\n<p>Taikant \u0161\u012f metod\u0105 pasirenkamos jau egzistuojan\u010dios grup\u0117s, kurios skiriasi tam tikromis pagrindin\u0117mis charakteristikomis, ir lyginama j\u0173 reakcija \u012f nepriklausom\u0105 kintam\u0105j\u012f. Nors tyr\u0117jas grupes paskirsto ne atsitiktine tvarka, jis vis tiek gali i\u0161tirti nepriklausomo kintamojo poveik\u012f.<\/p>\n\n\n\n<h3 id=\"h-regression-discontinuity\"><strong>Regresijos nutr\u016bkstamumas<\/strong><\/h3>\n\n\n\n<p>Pagal \u0161\u012f model\u012f nustatomas ribinis ta\u0161kas arba riba, pagal kuri\u0105 nustatoma, kurie dalyviai gaus gydym\u0105 arba intervencij\u0105. Daroma prielaida, kad abiejose ribin\u0117s vert\u0117s pus\u0117se esantys dalyviai yra pana\u0161\u016bs visais kitais aspektais, i\u0161skyrus nepriklausomo kintamojo poveik\u012f.<\/p>\n\n\n\n<h3 id=\"h-interrupted-time-series-design\"><strong>Nutraukt\u0173 laiko eilu\u010di\u0173 projektavimas<\/strong><\/h3>\n\n\n\n<p>Taikant \u0161\u012f model\u012f priklausomas kintamasis matuojamas kelis kartus prie\u0161 ir po intervencijos ar gydymo prad\u017eios. Lygindami priklausomo kintamojo kitimo tendencijas, tyr\u0117jai gali nustatyti intervencijos poveik\u012f.<\/p>\n\n\n\n<h3 id=\"h-natural-experiments\"><strong>Nat\u016bral\u016bs eksperimentai<\/strong><\/h3>\n\n\n\n<p>Nat\u016braliuose eksperimentuose pasinaudojama nat\u016braliai susiklos\u010diusiais \u012fvykiais ar aplinkyb\u0117mis, kurios imituoja atsitiktin\u012f priskyrim\u0105, b\u016bding\u0105 tikriems eksperimentams. Tyr\u0117j\u0173 nustatytose situacijose dalyviai susiduria su skirtingomis s\u0105lygomis be joki\u0173 j\u0173 manipuliacij\u0173.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/researcher.life\/all-access-pricing?utm_source=mtg&amp;utm_campaign=all-access-promotion&amp;utm_medium=blog\"><img decoding=\"async\" loading=\"lazy\" width=\"1024\" height=\"410\" src=\"https:\/\/mindthegraph.com\/blog\/wp-content\/uploads\/2024\/08\/Banner3-1024x410.png\" alt=\"\" class=\"wp-image-55425\" srcset=\"https:\/\/mindthegraph.com\/blog\/wp-content\/uploads\/2024\/08\/Banner3-1024x410.png 1024w, https:\/\/mindthegraph.com\/blog\/wp-content\/uploads\/2024\/08\/Banner3-300x120.png 300w, https:\/\/mindthegraph.com\/blog\/wp-content\/uploads\/2024\/08\/Banner3-768x307.png 768w, https:\/\/mindthegraph.com\/blog\/wp-content\/uploads\/2024\/08\/Banner3-1536x615.png 1536w, https:\/\/mindthegraph.com\/blog\/wp-content\/uploads\/2024\/08\/Banner3-2048x820.png 2048w, https:\/\/mindthegraph.com\/blog\/wp-content\/uploads\/2024\/08\/Banner3-18x7.png 18w, https:\/\/mindthegraph.com\/blog\/wp-content\/uploads\/2024\/08\/Banner3-100x40.png 100w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure>\n\n\n\n<h2 id=\"h-application-of-the-quasi-experiment-design\"><strong>Kvazieksperimento modelio taikymas<\/strong><\/h2>\n\n\n\n<p>Kvazieksperimentini\u0173 tyrim\u0173 modeliai taikomi \u012fvairiose srityse - nuo \u0161vietimo iki visuomen\u0117s sveikatos ir kitose. Vienas i\u0161 svarbi\u0173 kvazieksperiment\u0173 privalum\u0173 yra tai, kad juos galima taikyti realioje aplinkoje, kai atsitiktini\u0173 im\u010di\u0173 nustatymas ne visada \u012fmanomas ar eti\u0161kas.<\/p>\n\n\n\n<h2 id=\"h-ethical-reasons\"><strong>Etin\u0117s prie\u017eastys<\/strong><\/h2>\n\n\n\n<p>Atliekant tyrimus da\u017enai kyla etini\u0173 problem\u0173, kai atsitiktin\u0117s atrankos b\u016bdu suskirs\u010dius dalyvius \u012f skirtingas grupes gali b\u016bti atimta galimyb\u0117 gauti nauding\u0105 gydym\u0105 ar intervencij\u0105. Tokiais atvejais kvazieksperimentiniai modeliai yra etin\u0117 alternatyva, leid\u017eianti tyr\u0117jams i\u0161tirti intervencij\u0173 poveik\u012f neatimant i\u0161 nieko galimos naudos.<\/p>\n\n\n\n<h2 id=\"h-examples-of-quasi-experimental-design\"><strong>Kvazieksperimentinio dizaino pavyzd\u017eiai<\/strong><\/h2>\n\n\n\n<p>Panagrin\u0117kime kelet\u0105 kvazieksperimentini\u0173 modeli\u0173 pavyzd\u017ei\u0173, kad suprastume j\u0173 taikym\u0105 \u012fvairiomis aplinkyb\u0117mis.<\/p>\n\n\n\n<h3 id=\"h-design-of-non-equivalent-groups\"><strong>Nelygiaver\u010di\u0173 grupi\u0173 projektavimas<\/strong><\/h3>\n\n\n\n<h4 id=\"h-determining-the-effectiveness-of-math-apps-in-supplementing-math-classes\"><strong>Matematikos program\u0173 veiksmingumo nustatymas papildant matematikos pamokas<\/strong><\/h4>\n\n\n\n<p>\u012esivaizduokite tyrim\u0105, kuriuo siekiama nustatyti matematikos program\u0117li\u0173 veiksmingum\u0105 papildant tradicines matematikos pamokas mokykloje. Atsitiktinai paskirstyti mokinius \u012f skirtingas grupes gali b\u016bti neprakti\u0161ka arba sutrikdyti esam\u0105 klas\u0117s strukt\u016br\u0105. Vietoj to tyr\u0117jai gali pasirinkti dvi pana\u0161ias klases: vienai i\u0161 j\u0173 bus taikoma matematikos program\u0117l\u0117, o kitai - tradiciniai mokymo metodai. Palygin\u0119 \u0161i\u0173 dviej\u0173 grupi\u0173 rezultatus, tyr\u0117jai gali padaryti i\u0161vadas apie program\u0117l\u0117s veiksmingum\u0105.<\/p>\n\n\n\n<p>Nor\u0117dami atlikti tok\u012f kvazieksperimentin\u012f tyrim\u0105, kaip pirmiau min\u0117tasis, tyr\u0117jai gali pasinaudoti <a href=\"https:\/\/www.questionpro.com\/us\">QuestionPro<\/a>, pa\u017eangi\u0105 mokslini\u0173 tyrim\u0173 platform\u0105, kurioje si\u016blomos i\u0161samios apklausos ir duomen\u0173 analiz\u0117s priemon\u0117s. Naudodamiesi \"QuestionPro\" tyr\u0117jai gali rengti apklausas duomenims rinkti, analizuoti rezultatus ir gauti verting\u0173 \u012f\u017evalg\u0173 savo kvazieksperimentiniams tyrimams.<\/p>\n\n\n\n<h4 id=\"h-how-questionpro-helps-in-quasi-experimental-research\"><strong>Kaip \"QuestionPro\" padeda atlikti kvazieksperimentinius tyrimus?<\/strong><\/h4>\n\n\n\n<p>D\u0117l galing\u0173 \"QuestionPro\" funkcij\u0173, toki\u0173 kaip atsitiktinis dalyvi\u0173 priskyrimas, apklausos \u0161akojimasis ir duomen\u0173 vizualizavimas, tyr\u0117jai gali veiksmingai atlikti ir analizuoti kvazieksperimentinius tyrimus. Platformoje sukurta patogi vartotojo s\u0105saja ir patikimos ataskait\u0173 teikimo galimyb\u0117s, tod\u0117l tyr\u0117jai gali rinkti duomenis, tirti ry\u0161ius ir daryti reik\u0161mingas i\u0161vadas.<\/p>\n\n\n\n<h3 id=\"h-natural-experiments-1\"><strong>Nat\u016bral\u016bs eksperimentai<\/strong><\/h3>\n\n\n\n<p>Kai kuriais atvejais tyr\u0117jai, nor\u0117dami i\u0161tirti prie\u017eastinius ry\u0161ius, gali pasinaudoti nat\u016braliais eksperimentais.&nbsp;<\/p>\n\n\n\n<h4 id=\"h-determining-the-effectiveness-of-teaching-modern-leadership-techniques-in-start-up-businesses\"><strong>\u0160iuolaikini\u0173 lyderyst\u0117s metod\u0173 mokymo efektyvumo nustatymas pradedan\u010diosiose \u012fmon\u0117se<\/strong><\/h4>\n\n\n\n<p>Apsvarstykite tyrim\u0105, kuriame vertinamas \u0161iuolaikini\u0173 vadovavimo metod\u0173 mokymo veiksmingumas pradedan\u010diosiose \u012fmon\u0117se. U\u017euot dirbtinai skirst\u0119 \u012fmones \u012f skirtingas grupes, tyr\u0117jai gali steb\u0117ti \u012fmones, kurios nat\u016braliai \u012fsisavina \u0161iuolaikinius vadovavimo metodus, ir palyginti j\u0173 rezultatus su \u012fmoni\u0173, kurios toki\u0173 metod\u0173 ne\u012fdieg\u0117, rezultatais.<\/p>\n\n\n\n<h2 id=\"h-advantages-and-disadvantages-of-the-quasi-experimental-design\"><strong>Kvazieksperimentinio dizaino privalumai ir tr\u016bkumai<\/strong><\/h2>\n\n\n\n<h3 id=\"h-advantages\"><strong>Privalumai<\/strong><\/h3>\n\n\n\n<p>Kvazieksperimentiniai modeliai turi kelet\u0105 prana\u0161um\u0173, palyginti su tikrais eksperimentais, tod\u0117l jie yra vertinga mokslini\u0173 tyrim\u0173 priemon\u0117:<\/p>\n\n\n\n<ol>\n<li><strong>Tyrimo apimtis<\/strong>: Kvazieksperimentai leid\u017eia tyr\u0117jams tirti prie\u017easties ir pasekm\u0117s ry\u0161ius realioje aplinkoje ir suteikia verting\u0173 \u012f\u017evalg\u0173 apie sud\u0117tingus rei\u0161kinius, kuriuos gali b\u016bti sunku atkartoti kontroliuojamoje laboratorin\u0117je aplinkoje.<\/li>\n\n\n\n<li><strong>Regresijos nutr\u016bkstamumas<\/strong>: Tyr\u0117jai gali naudoti regresijos nutr\u016bkstamumo metod\u0105, kad \u012fvertint\u0173 intervencij\u0173 ar gydymo priemoni\u0173 poveik\u012f, kai atsitiktinis priskyrimas yra ne\u012fmanomas. Taikant \u0161\u012f model\u012f, pasinaudojama turimais duomenimis ir nat\u016braliai susiklos\u010diusiomis ribin\u0117mis vert\u0117mis, kad b\u016bt\u0173 galima daryti prie\u017eastines i\u0161vadas.<\/li>\n<\/ol>\n\n\n\n<h3 id=\"h-disadvantage\"><strong>Tr\u016bkumai<\/strong><\/h3>\n\n\n\n<p><strong>Atsitiktin\u0117s atrankos nebuvimas<\/strong>: Kvazieksperimentiniai modeliai neturi atsitiktinio dalyvi\u0173 priskyrimo, tod\u0117l atsiranda galimyb\u0117, kad rezultatams gali tur\u0117ti \u012ftakos klaidinantys kintamieji. Tyr\u0117jai turi atid\u017eiai apsvarstyti galimus alternatyvius pasteb\u0117to poveikio paai\u0161kinimus.<\/p>\n\n\n\n<h2 id=\"h-what-are-the-different-quasi-experimental-study-designs\"><strong>Kokie yra skirtingi kvazieksperimentini\u0173 tyrim\u0173 planai?<\/strong><\/h2>\n\n\n\n<p>Kvazieksperimentiniai projektai apima \u012fvairius metodus, \u012fskaitant nelygiaver\u010di\u0173 grupi\u0173 projektus, nutraukt\u0173 laiko eilu\u010di\u0173 projektus ir nat\u016bralius eksperimentus. Kiekvienas dizainas turi unikali\u0173 privalum\u0173 ir apribojim\u0173, tod\u0117l tyr\u0117jams suteikiama \u012fvairi\u0173 priemoni\u0173 prie\u017eastiniams ry\u0161iams tirti \u012fvairiomis aplinkyb\u0117mis.<\/p>\n\n\n\n<h2 id=\"h-example-of-the-natural-experiment-approach\"><strong>Nat\u016bralaus eksperimento metodo pavyzdys<\/strong><\/h2>\n\n\n\n<p>Mokslininkai, norintys i\u0161tirti visuomen\u0117s sveikatos kampanijos, kuria siekiama suma\u017einti r\u016bkan\u010di\u0173j\u0173 skai\u010di\u0173, poveik\u012f, gali pasinaudoti nat\u016braliu eksperimentu. Lygindami r\u016bkan\u010di\u0173j\u0173 skai\u010di\u0173 regione, kuriame buvo \u012fgyvendinta kampanija, su pana\u0161iu regionu, kuriame kampanija nebuvo \u012fgyvendinta, tyr\u0117jai gali i\u0161tirti intervencijos veiksmingum\u0105.<\/p>\n\n\n\n<h2 id=\"h-differences-between-quasi-experiments-and-true-experiments\"><strong>Kvazieksperiment\u0173 ir tikr\u0173 eksperiment\u0173 skirtumai<\/strong><\/h2>\n\n\n\n<p>Kvazieksperimentai ir tikrieji eksperimentai pirmiausia skiriasi tuo, kad juose dalyviai \u012f grupes skirstomi atsitiktine tvarka. Tikrieji eksperimentai u\u017etikrina auk\u0161tesn\u012f kontrol\u0117s lyg\u012f, o kvazieksperimentai yra praktin\u0117 ir etin\u0117 alternatyva tais atvejais, kai atsitiktin\u0117s atrankos taikymas ne\u012fmanomas arba nepageidautinas.<\/p>\n\n\n\n<h3 id=\"h-example-comparing-a-true-experiment-and-quasi-experiment\"><strong>Tikro eksperimento ir kvazieksperimento palyginimo pavyzdys<\/strong><\/h3>\n\n\n\n<p>Tikrame eksperimente, kuriame tiriamas naujo vaisto poveikis konkre\u010diai b\u016bklei, tyr\u0117jai atsitiktine tvarka paskirt\u0173 dalyvius \u012f eksperimentin\u0119 grup\u0119, kuriai skiriamas vaistas, arba \u012f kontrolin\u0119 grup\u0119, kuriai skiriamas placebas. Kvazieksperimente tyr\u0117jai gal\u0117t\u0173 palyginti pacientus, kurie savanori\u0161kai pasirinko vartoti vaistus, su tais, kurie j\u0173 nevartoja, ir i\u0161tirti \u0161i\u0173 dviej\u0173 grupi\u0173 rezultat\u0173 skirtumus.<\/p>\n\n\n\n<h2 id=\"h-quasi-experiment-a-quick-wrap-up\"><strong>Kvazieksperimentas: Trumpas apibendrinimas<\/strong><\/h2>\n\n\n\n<p>Kvazieksperimentini\u0173 tyrim\u0173 modeliai atlieka svarb\u0173 vaidmen\u012f moksliniame tyrime, nes leid\u017eia tyr\u0117jams tirti prie\u017easties ir pasekm\u0117s ry\u0161ius realioje aplinkoje. \u0160ie modeliai yra prakti\u0161ka ir eti\u0161ka tikr\u0173 eksperiment\u0173 alternatyva, tod\u0117l jie yra vertinga priemon\u0117 \u012fvairiose mokslo srityse. D\u0117l savo universalumo ir pritaikomumo kvazieksperimentiniai modeliai ir toliau padeda suprasti sud\u0117tingus rei\u0161kinius.<\/p>\n\n\n\n<h2 id=\"h-turn-your-data-into-easy-to-understand-and-dynamic-stories\"><strong>Paverskite savo duomenis lengvai suprantamomis ir dinami\u0161komis istorijomis<\/strong><\/h2>\n\n\n\n<p>Kai norite paai\u0161kinti sud\u0117tingus duomenis, visada patartina juos suskaidyti \u012f paprastesnius vaizdinius ar istorijas. \u0160iuo atveju <a href=\"https:\/\/mindthegraph.com\" target=\"_blank\" rel=\"noreferrer noopener\">Mind the Graph<\/a> yra. Tai platforma, padedanti tyr\u0117jams ir mokslininkams paversti savo duomenis lengvai suprantamais ir dinami\u0161kais pasakojimais, padedan\u010diais auditorijai geriau suprasti s\u0105vokas. U\u017esiregistruokite dabar ir susipa\u017einkite su mokslini\u0173 infografik\u0173 biblioteka.&nbsp;<\/p>\n\n\n\n<div style=\"height:21px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><a href=\"https:\/\/mindthegraph.com\/\"><img decoding=\"async\" loading=\"lazy\" width=\"517\" height=\"250\" src=\"https:\/\/mindthegraph.com\/blog\/wp-content\/uploads\/2023\/03\/illustrations-banner.webp\" alt=\"\" class=\"wp-image-27276\" srcset=\"https:\/\/mindthegraph.com\/blog\/wp-content\/uploads\/2023\/03\/illustrations-banner.webp 517w, https:\/\/mindthegraph.com\/blog\/wp-content\/uploads\/2023\/03\/illustrations-banner-300x145.webp 300w, https:\/\/mindthegraph.com\/blog\/wp-content\/uploads\/2023\/03\/illustrations-banner-18x9.webp 18w, https:\/\/mindthegraph.com\/blog\/wp-content\/uploads\/2023\/03\/illustrations-banner-100x48.webp 100w\" sizes=\"(max-width: 517px) 100vw, 517px\" \/><\/a><\/figure><\/div>\n\n\n<div style=\"height:21px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"is-layout-flex wp-block-buttons\">\n<div class=\"wp-block-button aligncenter\"><a class=\"wp-block-button__link has-background wp-element-button\" href=\"https:\/\/mindthegraph.com\/\" style=\"border-radius:50px;background-color:#dc1866\" target=\"_blank\" rel=\"noreferrer noopener\">Prad\u0117kite kurti su Mind the Graph<\/a><\/div>\n<\/div>\n\n\n\n<div style=\"height:44px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>","protected":false},"excerpt":{"rendered":"<p>Susipa\u017einkite su kvazieksperimento s\u0105voka, \u012fvairiais jo tipais, realiais pavyzd\u017eiais ir kaip \"QuestionPro\" padeda atlikti \u0161iuos tyrimus. <\/p>","protected":false},"author":38,"featured_media":29837,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[959,28],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v19.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Quasi-Experiment: Understand What It Is, Types &amp; 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