Proefschrift_Holstein

Chapter 5

Table 5.1 Characteristics of participants and studies

Study A

Study B

Study C

Study D

Study E

Total

N

32

24

27

9

26

118

Age mean

15.44

21.92

38.78

58

59.58

35.03

Age range

14-17

18-27

24-65

29-67

42-69

14-69

Gender (% men)

59.4 %

41.67 %

44.44 %

77.78 %

57.69 %

53.4 %

Max

possible

€ 12.80

€ 8.80

€ 12.80

€ 12.80

€ 13.20

reward

High reward

€ 0.15

€ 0.10

€ 0.15

€ 0.15

€ 0.10

Earned

bonus:

€ 9.10 (34.05) 71.28 % (2.62)

€ 7.17 (17.45) 81.49% (1.98)

€10.38 (22.09) 81.10 % (1.73)

€ 10.04 (61.40) 78.44 %(4.80)

€ 12.05 (12.32)

€ 9.72 (19.50) 80.56% (1.18)

mean (SE)

Earned bonus: % of max: mean (SE)

91.29% (0.89)

Number of trials

160

160

160

160

240

fMRI control group patient study

fMRI control group patient study

Behavioral control group patient study

fMRI young healthy participants

Behavioral control group patient study

Type of study

ITI

and

RC

1-2s

2-6s

2-6s

2-6s

1-2s

interval

CT interval

400 msec.

2-6s

400 msec.

400 msec.

1-2s

SE = standard error; ITI = inter-trial-interval; RC = reward - task cue; CT = task cue - target.

adulthood, we assessed the effect of reward motivation on cognitive control across the life span, from adolescence (prior to the start of age-related decreases) to senescence.

Methods Participants and procedure

Pooling the data from five studies that were conducted between 2008 and 2015 enabled us to include 118 healthy participants (63 men, mean age 35.03, range 14-69). Three of these studies (N = 60) were conducted in a functional magnetic resonance environment: one in healthy young participants (Aarts et al., 2010) and the other 2 were patient studies (e.g. Aarts et al., 2015). We only included the healthy control participants who participated in these patient studies. The remaining participants were 26 (Aarts et al., 2012) and 32 healthy control participants who were tested in front of a computer screen ( table 5.1 ). All studies were

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