Results

ANOVA

ANOVA - Attractiveness
95% CI for ω²ₚ
Cases Sum of Squares df Mean Square F p ω²ₚ Lower Upper
Facetype 21.333 1 21.333 15.583 < .001 0.233 0.048 0.432
Alcohol 16.542 2 8.271 6.041 0.005 0.174 0.005 0.362
Facetype ✻ Alcohol 23.292 2 11.646 8.507 < .001 0.238 0.036 0.428
Residuals 57.500 42 1.369  
Note.  Type III Sum of Squares

Descriptives

Descriptives - Attractiveness
Facetype Alcohol N Mean SD SE Coefficient of variation
Unattractive Placebo 8 3.500 1.604 0.567 0.458
  Low dose 8 4.875 1.246 0.441 0.256
  High dose 8 6.625 1.061 0.375 0.160
Attractive Placebo 8 6.375 0.916 0.324 0.144
  Low dose 8 6.500 0.926 0.327 0.142
  High dose 8 6.125 1.126 0.398 0.184

Descriptives plots

Contrast Tables

Helmert Contrast - Alcohol
95% CI for Mean Difference 95% CI for Cohen's d
Comparison Estimate Lower Upper SE df t p Cohen's d Lower Upper
Placebo - Low dose, High dose -1.094 -1.817 -0.371 0.358 42 -3.053 0.004 -0.935 -1.586 -0.283
Low dose - High dose -0.687 -1.522 0.147 0.414 42 -1.662 0.104 -0.588 -1.313 0.138

Post Hoc Tests

Standard (LSD)

Post Hoc Comparisons - Facetype ✻ Alcohol - Conditional on Facetype
95% CI for Mean Difference 95% CI for Cohen's d
Facetype Mean Difference Lower Upper SE t Cohen's d Lower Upper ptukey
Unattractive Placebo Low dose -1.375 -2.796 0.046 0.585 -2.350 -1.175 -2.782 0.431 0.060
    High dose -3.125 -4.546 -1.704 0.585 -5.342 -2.671 -4.472 -0.870 < .001
  Low dose High dose -1.750 -3.171 -0.329 0.585 -2.991 -1.496 -3.133 0.141 0.013
Attractive Placebo Low dose -0.125 -1.546 1.296 0.585 -0.214 -0.107 -1.663 1.450 0.975
    High dose 0.250 -1.171 1.671 0.585 0.427 0.214 -1.344 1.772 0.904
  Low dose High dose 0.375 -1.046 1.796 0.585 0.641 0.320 -1.240 1.881 0.798
Note.  P-value and confidence intervals adjusted for comparing a family of 3 estimates (confidence intervals corrected using the tukey method).
Post Hoc Comparisons - Facetype ✻ Alcohol - Conditional on Alcohol
95% CI for Mean Difference 95% CI for Cohen's d
Alcohol Mean Difference Lower Upper SE t Cohen's d Lower Upper ptukey
Placebo Unattractive Attractive -2.875 -4.056 -1.694 0.585 -4.914 -2.457 -4.223 -0.691 < .001
Low dose   Attractive -1.625 -2.806 -0.444 0.585 -2.778 -1.389 -3.015 0.237 0.008
High dose   Attractive 0.500 -0.681 1.681 0.585 0.855 0.427 -1.136 1.990 0.398

Marginal Means

Marginal Means - Facetype ✻ Alcohol
95% CI for Mean Difference
Facetype Alcohol Marginal Mean Lower Upper SE
Unattractive Placebo 3.500 2.665 4.335 0.414
Attractive   6.375 5.540 7.210 0.414
Unattractive Low dose 4.875 4.040 5.710 0.414
Attractive   6.500 5.665 7.335 0.414
Unattractive High dose 6.625 5.790 7.460 0.414
Attractive   6.125 5.290 6.960 0.414

Simple Main Effects

Simple Main Effects - Alcohol
Level of Facetype Sum of Squares df Mean Square F p
Unattractive 39.250 2 19.625 14.335 < .001
Attractive 0.583 2 0.292 0.213 0.809

Raincloud Plots

Raincloud Plots

Attractiveness