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Samenvatting Meten en Observeren

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Samenvatting reader Meten en Observeren, gebruikt in het tweede semester van het schakeljaar OOW aan de Universiteit Antwerpen. Betrouwbaarheidsanalyses, Cronbach's Alpha,...

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September 20, 2016
Number of pages
18
Written in
2015/2016
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Meten en Observeren




Meten en Observeren


Schakelprogramma
Opleidings- en onderwijswetenschappen


Academiejaar 2015 - 2016



Mike Slangen

,Samenvatting Meten en Observeren

Inhoud
1 Vragenlijstonderzoek........................................................................................................ 2
1.1 Enkelvoudige en samengestelde metingen ...................................................................... 2
1.2 Vragenlijsten ontwikkelen ................................................................................................. 3
1.2.1 Deductieve ontwikkeling ............................................................................................ 3
1.2.2 Inductieve ontwikkeling ............................................................................................. 3
1.2.3 Invullen van vragenlijsten en interpretatie ................................................................ 4
1.2.4 Soorten ratings .......................................................................................................... 5
1.2.5 Strategieën voor vragenlijstontwikkeling ................................................................... 5
1.3 Meetfouten en betrouwbaarheid ....................................................................................... 6


2 Betrouwbaarheidsanalyses............................................................................................... 7
2.1 Cronbach’s alpha............................................................................................................... 7
2.2 Cronbach’s alpha in R ....................................................................................................... 8
2.3 Interbeoordelaarsbetrouwbaarheid................................................................................... 9


3 Observeren.................................................................................................................... 10
3.1 Definitie en kenmerken ................................................................................................... 10
3.2 Soorten observatie .......................................................................................................... 10
3.3 Ontwerpen van observatieschema’s ............................................................................... 11
3.4 Participatie ...................................................................................................................... 12


4 Validiteitskader van Kane ............................................................................................... 13
4.1 Kader van Kane ............................................................................................................... 13
4.2 Soorten validiteit ............................................................................................................. 15


5 Factoranalyse en toepassing in R.................................................................................... 16
5.1 PCA of EFA ....................................................................................................................... 16




Mike Slangen Academiejaar 2015-2016 Pagina 1 van 17

, Samenvatting Meten en Observeren

1 Vragenlijstonderzoek
1.1 Enkelvoudige en samengestelde metingen


 Operationaliseren = van concept naar meting:
o Vb.: van intrinsieke motivatie tot een of meerdere variabelen.
 Enkelvoudige metingen:
o In kaart brengen van een kenmerk via 1 variabele;
o Vb.; geslacht, leeftijd, woonplaats,…


latente
manifeste variabele
variabele


 Samengestelde / meervoudige metingen:
o Voor concepten die niet te meten zijn aan de hand van 1 variabele;
o Meerdere vragen/variabelen om eenzelfde kenmerk te meten;
o Opvattingen, waarden, houdingen,… meten;
o Verschijnselen die te heterogeen zijn om 1 vraag te dekken  uiteenrafelen
in meerdere vragen;
o Impact van toevalsfactoren of meetfouten wordt verkleind (uitgevlakt);
o Meerdere vragen combineren  meer nuance in uitkomsten.
o Vb.: cultureel kapitaal  aantal boeken in huis, frequentie
theaterbezoeken,…



manifeste variabele 1
latente
manifeste variabele 2
variabele
manifeste variabele 3




 Latent  manifest:
o Latente variabelen  niet rechtstreeks waarneembaar;
 vb.: studiemotivatie;

o Manifeste variabelen  resulteren rechtstreeks uit de vragenlijst;
 vb.: graag studeren, studeren is boeiend, wil om bij te leren,…




Mike Slangen Academiejaar 2015-2016 Pagina 2 van 17
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