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Table 8 Negative (NPP) and positive predictive power (PPP) at various base-rates of malingering

From: The effect of coaching on the simulated malingering of memory impairment

Variable

Cut-off

Base rate

NPP

PPP

Trial 1

< 6

.1

.50

.13

  

.2

.44

.26

  

.3

.38

.37

Trial 5

< 10

.1

.60

.20

  

.2

.52

.36

  

.3

.44

.50

Trial 1-5

< 43

.1

.50

.15

  

.2

.43

.29

  

.3

.37

.41

Interference list

< 5

.1

.68

.24

  

.2

.59

.41

  

.3

.50

.54

Trial 6

< 7

.1

.65

.23

  

.2

.56

.40

  

.3

.48

.53

Trial 7

< 7

.1

.64

.26

  

.2

.55

.44

  

.3

.46

.57

Trial 6-5

< 2

.1

.80

.26

  

.2

.71

.44

  

.3

.61

.57

Trial 7-5

< 2

.1

.59

.13

  

.2

.52

.25

  

.3

.45

.37

Recognition

< 12

.1

.64

.25

  

.2

.55

.43

  

.3

.47

.56

Corrected recognition score

< 11

.1

.15

.10

  

.2

.13

.21

  

.3

.12

.31

3recallednotrecog

> 1

.1

.64

.28

  

.2

.54

.47

  

.3

.45

.60

VLMT number of times the first word was recalled in trials 1 to 5

< 5

.1

.36

.13

  

.2

.31

.25

  

.3

.27

.37

VLMT number of times the last word was recalled in trials 1 to 5

< 4

.1

.57

.11

  

.2

.51

.22

  

.3

.44

.32

FIT recall

< 9

.1

.64

.18

  

.2

.56

.33

  

.3

.48

.46

FIT recognition

< 12

.1

.68

.24

  

.2

.59

.41

  

.3

.50

.54

FIT combination score

< 22

.1

.55

.17

  

.2

.48

.31

  

.3

.41

.44

BSV-STM correct responses

< 84

.1

.34

.20

  

.2

.28

.36

  

.3

.23

.49

BSV-STM RT

> 774

.1

.48

.23

  

.2

.40

.40

  

.3

.33

.53

VLMT 1

< 57

.1

.67

.29

  

.2

.58

.48

  

.3

.48

.61

COMB 1

< 58

.1

.67

.29

  

.2

.58

.48

  

.3

.48

.61