Skip to main content

Table 3 Response inhibition and food appeal by education level

From: Impact of increasing the availability of healthier vs. less-healthy food on food selection: a randomised laboratory experiment

 

Mean (S.D.) (n)

Test for difference in means

Lower education

Higher education

Test statistica

p-value

Response inhibition

 Stop-signal response time

243.2

(176.4)

(210)

245.7

(164.7)

(204)

χ2(1) = 0.457

0.499

 Stroop score

− 324.7

(287.4)

(207)

− 248.3

(177.7)

(204)

χ2(1) = 6.113

0.013

Food appeal

 Explicit: enjoyment ratings

Healthier food

0.56

(0.98)

(209)

0.72

(0.80)

(206)

χ2(1) = 2.021

0.155

Less-healthy food

1.01

(1.02)

(210)

1.07

(0.93)

(205)

χ2(1) = 0.344

0.558

 Implicit: IAT scores

Healthier food

0.29

(0.51)

(202)

0.19

(0.51)

(198)

t(398) = 1.945

0.053

Less-healthy food

0.29

(0.53)

(193)

0.09

(0.50)

(185)

t(376) = 3.708

< 0.001

  1. a Choice of t-test or Kruskal-Wallis determined by normality of response inhibition or food appeal variable, as assessed by Shapiro-Wilk tests and examination of diagnostic plots