1、2 2 52 1 61 2 82 1 92 3 102 3 112 3 92 3 8END DATA.MANOVA y BY A(1,2) B(1,3) /DESIGN /DESIGN=A WITHIN B(1) A WITHIN B(2) A WITHIN B(3).若A与B存在交互作用而进行的进一步分析(即简单效应分析)。同时你可以再加一个design: /DESIGN=B WITHIN A(1) B WITHIN A(2).自编数据试试 y A B 4.00 1.00 3.00 2.00 1.00 1.00 3.00 1.00 1.00 5.00 2.00 2.00 6.00 2.00
2、1.00 8.00 1.00 2.00 9.00 2.00 1.00 10.00 2.00 3.00 11.00 2.00 3.00 9.00 2.00 3.00当然,你可也直接贴下述语句至syntax编辑框:应会输出下述结果:The default error term in MANOVA has been changed from WITHIN CELLS toWITHIN+RESIDUAL. Note that these are the same for all full factorialdesigns.* * * * * * A n a l y s i s o f V a r i
3、a n c e * * * * * * 12 cases accepted. 0 cases rejected because of out-of-range factor values. 0 cases rejected because of missing data. 6 non-empty cells. 3 designs will be processed.- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -* * * * * * A n a l y s i s o f V a r i a n
4、 c e - design 1 * * * * * *Tests of Significance for Y using UNIQUE sums of squaresSource of Variation SS DF MS F Sig of FWITHIN CELLS 10.00 6 1.67X1 15.00 1 15.00 9.00 .024X2 6.46 2 3.23 1.94 .224X1 BY X2 33.00 2 16.50 9.90 .013(Model) 80.92 5 16.18 9.71 .008(Total) 90.92 11 8.27R-Squared = .890Adj
5、usted R-Squared = .798* * * * * * A n a l y s i s o f V a r i a n c e - design 2 * * * * * *WITHIN+RESIDUAL 16.46 8 2.06X1 WITHIN X2(1) 25.00 1 25.00 12.15 .008X1 WITHIN X2(2) 8.15 1 8.15 3.96 .082X1 WITHIN X2(3) 43.74 1 43.74 21.26 .002(Model) 74.46 3 24.82 12.06 .002R-Squared = .819Adjusted R-Squa
6、red = .751* * * * * * A n a l y s i s o f V a r i a n c e - design 3 * * * * * *WITHIN+RESIDUAL 25.00 7 3.57X2 WITHIN X1(1) 30.30 2 15.15 4.24 .062X2 WITHIN X1(2) 35.58 2 17.79 4.98 .045(Model) 65.92 4 16.48 4.61 .039R-Squared = .725Adjusted R-Squared = .568另外,三因素完全随机实验中的简单效应和简单简单效应的分析。当实验设计中的因素多于两个
7、时,做简单效应检验的前提仍然是,方差分析中发现了显著的两次交互作用。而当三因素完全随机实验中发现了显著的三次交互作用时,可以进一步作简单简单效应检验。也是DESIGN。/DESIGN=A WITHIN B(1) WITHIN C(1) A WITHIN B(2) WITHIN C(2).例如:THREE-FACTOR RANDOMIZED EXPERIMENTSIMPLE SIMPLE EFFECTS.DATA LIST FREE /A B C Y.1 3 1 4 1 1 1 21 1 1 32 2 1 52 1 1 61 2 2 82 1 2 92 3 2 102 3 2 112 3 2 9
8、2 3 2 8MANOVA y BY A(1,2) B(1,3) C(1,2). A WITHIN B(3) A WITHIN C(1) A WITHIN C(2)二、被试内因素实验的简单效应分析程序与完全随机实验的不同之处:需要加一个WITHIN关键词说明的WSDESIGN分命令。假如一个两因素被试内实验中,A因素有两个水平、B因素有三个水平,因变量是Y,检验B因素在A因素的两个水平上的简单效应分析。TWO-FACTOR REPEATED MEASURED EXPERIMENT ANOVADATA LIST FREE /A1B1 A1B2 A1B3 A2B1 A2B2 A2B3.3 4 5
9、4 8 126 6 7 5 9 134 4 5 3 8 123 2 2 3 7 11MANOVA A1B1 A1B2 A1B3 A2B1 A2B2 A2B3 /WSFACTORS=A(2)B(3) /WSDESIGN=A WITHIN B(1)三、混合因素实验的简单效应分析一个两因素混合实验中,简单效应检验中既包括被试内因素,有包括被试间因素,这是需要用关键词MWITHIN代替WITHIN去做简单效应检验。例如,一个两因素混合实验中,A因素是被试间因素,B因素是被试内因素,当要求A因素在B1水平上的简单效应检验时,程序有两处说明:1.被试间因素A应写在DESIGN分命令中。/DESIGN=A2
10、.B1水平应写在WSDESIGN分命令中,跟在MWITHIN之后。/WSDESIGN=MWIRHIN B(1)两个命令和起来:/WSDESIGN=MWITHIN B(1)这样可以检验到“混合”简单效应。当要求B因素在A1水平上的简单效应检验时,/WSDESIGN=B/DESIGN=MWITHIN A(1)一个两因素混合实验中,A因素是被试间因素,有两个水平,B因素是被试内因素,有三个水平,要求做B因素在A的两个水平上的简单效应检验,程序如下:TWO-FACTOR MIXED EXPERIMENT ANOVADATA LIST FREE /A B1 B2 B3.1 3 3 4 1 1 3 21
11、6 1 32 5 1 52 4 4 61 2 9 82 1 7 91 4 6 82 3 3 112 9 5 9MANOVA B1 B2 B3 BY A(1,2)./WSFACTORS=B(3)/WSDESIGN/DESIGN/DESIGN=MWITHIN A(1) MWITHIN A(2).要求做另一个方向的简单效应检验,做A因素在B的三个水平的简单效应检验时,MWITHIN关键词应被移动到WSDESIGN分命令。程序如下:/WSDESIGN=MWITHINB(1) MWITHINB(2) MWITHIN B(3)/DESIGN= A.总结:被试内:WSDESIGN WITHIN被试间:DES
12、IGN WITHIN混合:MWITHIN三因素混合MANOVA F1S1 F1S2 F2S1 F2S2 BY A(1,3)/WSFACTORS = F(2)S(2)/WSDESIGN = F WITHIN S(1)/DESIGN = MWITHIN A(1).两个组间因素和一个组内因素的混合设计简单效应分析MANOVA A1 A2 BY B(1,2), C(1,2)/WSFACTORS=A(2)/WSDESIGN /WSDESIGN=A /DESIGN = MWITHIN B(1) WITHIN C(1) MWITHIN B(2) WITHIN C(1) MWITHIN B(1) WITHIN C(2) MWITHIN B(2) WITHIN C(2).
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