การสร้างและการหาคุณภาพเครื่องมือวิจัย

การสร้างและการหาคุณภาพเครื่องมือวิจัย

1. (innovation)innovation) - (innovation)invention) - (innovation)instruction) 2. - - /

// . c.v. E1 / E 2

(innovation)E.I.) (innovation)Rating

Rating Scale) (E.I.)E.I.) = - - * 0.50

(innovation)E.I.) 1 2 3 4 5 4 5 3 6 5 7 9 6 9 8 4.6

= = * 7.8 7.8 - 4.6 10 4.6 3.2 = 0.59 5.4 .50 (innovation)E1 / E2)) 1 : 1 1 /

1/ 1 3/ 3 / 3 E1 / E2 30

E1(innovation)%) E2(innovation)%) 1 85.56 84.07 2 86.67 85.56 3 82.22 83.33

4 85.56 84.44 5 83.70 84.07 6 84.80 84.80 7 84.47 83.33

8 85.16 84.24 9 85.56 84.44 10 86.30 84.81 85.00 84.30

(innovation)Coefficient of variation : c.v.) C.V. = S.D. X C.V. C.V. 10 C.V. 10-15 C.V. 15

11 1. (innovation)Test) 2. (innovation)Rating Scale) 3. (innovation)Questionaire) 4. (innovation)Checklist) 5. (innovation)Inventory)) 11 (innovation)) 6. (innovation)Observation) 7. (innovation)Interview)) 8. (innovation)Record)) 9. (innovation)Sociometry)) 10. (innovation)Case stud)y)) 11. (innovation)Projective Technique)

/

, , (innovation)content valid)ity)) try) out reliability) (innovation) rating scale)

IOC

5 :

1. (innovation)Valid)ity)) 2. (innovation)Reliability)) 3. (innovation)Difficulty)) 4. (innovation)Difficulty) Difficulty)) P .20 - .80 P .50 R P N P = R =

N 25% 25% r D R U RL D N 2 Ru = RL =

N = 27% 27% Point-Biserial Correlation 1 0

X p X f . pq r p.bis St X p = = X f St p = q = = (innovation)Discrimination) - - D -1.00 +1.00

: D > .40 : D > .30 - .39 : D > .20 - .29 : D < .19 : D : S= Rpost - Rpre

T Rpre = Rpost = S = T = S = 0.5 20 RpostRpre T

Rpre Rpost 1 5 17 0.60 2 12 17

0.25 3 3 18 0.75 4 3 19 0.80

5 14 19 0.25 (innovation)Test) 3 (innovation)achievement achievement test) (innovation)personality) test) (innovation)aptitud)e test)

(innovation)Objectivity)) 3 : 1. 2. 3. (innovation)Valid)ity)) 4 : (innovation)Content Valid)ity))

(innovation)Ind)ex of Item-Objective Congruence: IOC ) R IOC N R = N = IOC 0.5 IOC =0.5 (innovation)IOC) 5

1 2 3 4 5 6 7 8 9 1 0 1 0 1 1 0 1 -1 1 1 -1

1 2 1 1 1 0 -1 0 1 1 0 1 3 1 1 1 1 -1 -1 0 1 1

1 IOC x n 4 1 1 1 1 1 1 0 -1 1 1 5 1 -1

1 1 1 1 1 -1 1 1 S UM (innovation)x) 4 3 5 3 1 0 3 1 2 5 S

UM (innovation)x)/n 4 /5 3 /5 5 /5 3 /5 1 /5 0 3 /5 1 /5 2 /5 5 /5 IOC 0

.8 0 .6 1 0 .6 0 .2 0 0 .6 0 .2 0 .4 1 n = IOC =0.5

(innovation)IOC) (innovation)content valid)ity) ratio : CVR) N Ne - 2Ne -N 2 CVR N N 2 CVR Law)she (innovation)1970) Ne

N C VR 5 6 7 8 9 10 .99 .99 .75

.78 .78 .62) C VR 11 12) 13 14 15 2)0 .59 .56 .54 .51 .49 .42)

CV R 2)5 30 35 40 .37 .33 .31 .2)9 (innovation)Valid)ity)) (innovation)Construct Valid)ity)) : /

3 : 1. (innovation)Correlation Coefficient) 2 2. (innovation)Know) Group Technique) t-test (innovation)Valid)ity)) (innovation)Concurrent Concurrent Valid)ity)) :

(innovation)Valid)ity)) (innovation)Pred)ictive Valid)ity)) : (innovation)Reliability))

: 1. (innovation)Test-Retest) 2. (innovation)Equiv.Form Reliability)) 3. (innovation)Spilt Half Reliability)) 4. Kud)er-Richard)son KR-20, KR-21 (innovation)Reliability)) Test-Retest Reliability) :

(innovation)Reliability)) Equivalent-Forms Reliability) : 2 (innovation)Reliability)) (innovation)Split-Half Reliability) ) 2 :

Spearman Brow)n (innovation)Reliability)) Kud)er-Richard)son Reliability) : (innovation) 0-1) Kud)er-Richard)son (innovation)KR-20, KR-21) (innovation)Reliability)) Alpha Coefficient Reliability)

(innovation) 0-...) (innovation)Cronbach Cronbach Alpha Coefficient Reliability ) (E.I.)3.5 ) (E.I.)E.I.) 0.5 E1/ E2) . C.V.

10 - (innovation)p) 0.2-0.8 - (innovation)r) 0.2 - (innovation)IOC) 0.5 (innovation)S) = 0.5 0.8

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