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Huiswerkopdracht.................................................................................................................................................1
Opgave 1..................................................................................................................................................................2
Opgave 2..................................................................................................................................................................6
Opgave 3..................................................................................................................................................................8
Opgave 4................................................................................................................................................................10
Opgave 5................................................................................................................................................................11
Opgave 6................................................................................................................................................................13
Opgave 7................................................................................................................................................................15
Opgave 8................................................................................................................................................................16
Opgave 9................................................................................................................................................................20
Opgave 10..............................................................................................................................................................23
, Opgave 1
Opgave 1
De subschaal 'perfectionisme/zelfkritiek' heeft de laagste interne consistentie
met een Cronbach's Alpha van .685. De hoogste interne consistentie wordt
gevonden bij de subschaal 'defensieve onafhankelijkheid' met een Cronbach's
Alpha van .796. Bij geen enkele schaal is het verstandig een item weg te halen,
de interne consistentie verbetert daardoor namelijk niet.
Het verschil in interne consistentie tussen de subschalen heeft te maken met hoe
sterk de items binnen de subschaal met elkaar correleren en daarnaast met het
aantal items dat is opgenomen in elke subschaal. Uitschieters zijn minder van
invloed in schalen met meer items.
PSI Autonomie - perfectionisme/zelfkritiek, interne consistentie = .685
Reliability Statistics
Cronbach's Cronbach's N of Items
Alpha Alpha Based on
Standardized
Items
.685 .686 4
Item Statistics
Mean Std. Deviation N
psi8 3.63 1.422 1082
psi14 2.85 1.280 1082
psi24 4.00 1.229 1082
psi32 3.86 1.312 1082
Inter-Item Correlation Matrix
psi8 psi14 psi24 psi32
psi8 1.000 .290 .363 .409
psi14 .290 1.000 .289 .291
psi24 .363 .289 1.000 .476
psi32 .409 .291 .476 1.000
Item-Total Statistics
Scale Mean if Scale Variance if Corrected Item- Squared Cronbach's
Item Deleted Item Deleted Total Correlation Multiple Alpha if Item
Correlation Deleted
psi8 10.71 8.289 .471 .226 .619
psi14 11.49 9.584 .371 .138 .678
psi24 10.33 8.939 .505 .276 .597
psi32 10.48 8.402 .531 .303 .577
Pagina 2
, Opgave 1
PSI Autonomie - behoefte aan controle, interne consistentie = .724
Reliability Statistics
Cronbach's Cronbach's N of Items
Alpha Alpha Based on
Standardized
Items
.724 .724 8
Item Statistics
Mean Std. Deviation N
psi4 3.65 1.361 1082
psi12 3.43 1.305 1082
psi18 3.61 1.469 1082
psi22 3.41 1.309 1082
psi36 4.37 1.217 1082
psi40 3.12 1.287 1082
psi44 2.60 1.256 1082
psi48 3.45 1.287 1082
Inter-Item Correlation Matrix
psi4 psi12 psi18 psi22 psi36 psi40 psi44 psi48
psi4 1.000 .202 .372 .282 .375 .259 .364 .303
psi12 .202 1.000 .175 .181 .169 .136 .163 .181
psi18 .372 .175 1.000 .238 .337 .146 .273 .257
psi22 .282 .181 .238 1.000 .238 .140 .138 .209
psi36 .375 .169 .337 .238 1.000 .107 .236 .354
psi40 .259 .136 .146 .140 .107 1.000 .475 .308
psi44 .364 .163 .273 .138 .236 .475 1.000 .298
psi48 .303 .181 .257 .209 .354 .308 .298 1.000
Item-Total Statistics
Scale Mean if Scale Variance if Corrected Item- Squared Cronbach's Alpha if Item
Item Deleted Item Deleted Total Correlation Multiple Deleted
Correlation
psi4 23.98 28.090 .531 .299 .671
psi12 24.20 31.754 .282 .082 .722
psi18 24.01 28.642 .433 .218 .693
psi22 24.22 30.969 .338 .131 .711
psi36 23.26 30.216 .442 .250 .691
psi40 24.51 30.676 .370 .269 .705
psi44 25.03 29.571 .473 .316 .685
Pagina 3