(Moderation) & (Mediation): &

...

...

&

()

() , ,

1. 2.

3.

.

. ()

vs.

,

,

-

, , ,

20 /

(Y)Dependent Variable

A (X)Independent Variable

& A

(X) ()

.

& A

,

,

& A

1 2 2 , placebo

2 ( )

& A

(burnout)

&

(burnout)

...

(moderators)

(mediators)

(moderation)

(/ )X (/)

2 x 2 = 4

2 2 () () xx = = = , = ,

(interaction)???

;

:

036

10moderator

()

()

()

xy

2 ( / ) x 2 (/ )

:

3 ( ) ( ) Y

x

y

,

0

10

x

y

,

0

10

2

x

y

, /

0

10

,

x

y

0

10

,

x

y

0

10

( )

(interaction)??? 2 x 2

Means

7.7 (4.6)

6.2 (3.5)

6.95

6.5 (4.2)

5.1 (2.8)

5.80

Means 7.1 5.65 6.375

(interaction)??? ?

; ; ; ; ; ;

036

10

( )

.

Moderation ()

036

10 Moderator ( )

O Predictor ( )

..

Moderation ()

036

10moderator

()

()

()

xy

,

x

y

0

10

-

+

10

.

:2 TA

* *

10

.

(z-scores) simple slopes:http://www.quantpsy.org/interact/index.html

http://www.quantpsy.org/interact/index.html

Simple Slopes

x

y

0

10

(mediation)

036

10mediation

()()

()

()

x y (. xy)

,

.. ,

..

&

,

,

:

X Y,

, c

0 ( )

( )

4

(Baron & Kenny, 1986)

1

( .)

2

,

3

0 =

0 =

4

-

SOBEL TEST

-

tb

ta

http://www.psych.ku.edu/preacher/sobel/sobel.htm

http://www.psych.ku.edu/preacher/sobel/sobel.htm

SOBEL TESTSOBEL TEST

-

tb

ta

(indirect effect)

1 =

vs.

X M Y

:

X M Y

:

Mathieu & Taylor, 2006

,

vs.

X M Y :

* p < .05, ** p < .01, ***p < .001 Holmbeck, 2002

.29*

-.41***

-.37**

.16, z = 2.00*

Dawson, J.F. (2014). Moderation in management research: What, why, when, and how. Journal of Business Psychology, 29, 1-19.

Holmbeck, G.N. (1997). Toward terminological, conceptual, and statistical clarity in the study of mediators and moderators: Examples from the child-clinical and pediatric psychology literatures. Journal of Consulting and Clinical Psychology, 65, 599-610.

Mathieu, J.E., & Taylor, S.R. (2006). Clarifying conditions and decision points for mediational type inferences in organizational behavior. Journal of Organizational Behavior, 27, 1031-1056.

--------------------------------------------http://www.afhayes.com/spss-sas-and-mplus-macros-and-code.html

http://www.jeremydawson.co.uk/slopes.htm

http://www.afhayes.com/spss-sas-and-mplus-macros-and-code.htmlhttp://www.jeremydawson.co.uk/slopes.htm

1:

.) (mediation) , .) 4 Baron Kenny. ) (full mediation) (partial mediation);

2:

(, ) (, ) . . ;

dxanthopoulou@psy.auth.gr

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