Table 2 FHC-NU – factors and item parameters for study 1 and study 2

Value

…a healthy diet plays an important role in our lives.

1.92 (.78)

.71

.74

2.01 (.73)

.69

.76

2.22 (.74)

.64

.75

α_1-I = .90

…we naturally pay attention to eating healthfully.

1.86 (.76)

.80

.78

1.93 (.73)

.74

.81

2.10 (.71)

.70

.79

α_1-II = .88

…we routinely eat healthfully.

1.93 (.78)

.76

.71

1.99 (.70)

.76

.83

2.22 (.65)

.67

.75

α₂ = .84

…it is normal to choose healthful foods.

1.95 (.78)

.80

.80

1.98 (.70)

.73

.80

2.30 (.67)

.70

.76

Communication

…we are interested in articles (e.g. in magazines) on healthful nutrition.

1.43 (.85)

.63

.71

1.51 (.84)

.62

.66

1.55 (.92)

.56

.63

α_1-I = .86

…we remind each other to pay attention to a healthful diet.

1.65 (.81)

.66

.69

1.76 (.78)

.71

.78

1.73 (.83)

.66

.75

α_1-II = .86

…we talk about which foods are healthful.

1.84 (.84)

.67

.63

1.95 (.79)

.66

.75

2.35 (.78)

.55

.63

α₂ = .82

…we support each other to refrain from unhealthful things.

1.61 (.74)

.61

.58

1.63 (.75)

.65

.71

1.82 (.82)

.55

.64

…we talk about how to eat healthfully.

1.69 (.85)

.78

.93

1.73 (.81)

.75

.81

1.89 (.83)

.72

.81

Cohesion

…we appreciate spending time together during meals.

2.46 (.66)

.71

.75

2.47 (.66)

.73

.79

2.65 (.55)

.75

.85

α_1-I = .89

…everybody enjoys having meals together.

2.42 (.71)

.71

.74

2.44 (.64)

.72

.78

2.63 (.57)

.64

.66

α_1-II = .89

…eating together is a part of our daily family life.

2.30 (.76)

.78

.82

2.36 (.73)

.77

.83

2.64 (.62)

.61

.65

α₂ = .87

…we enjoy meals most when we sit at the same table.

2.36 (.73)

.74

.80

2.39 (.72)

.72

.76

2.63 (.58)

.72

.81

…we try to eat together as often as possible.

2.38 (.75)

.70

.77

2.42 (.73)

.73

.76

2.68 (.56)

.75

.82

Consensus

…we rarely argue about food- or diet-related matters.

1.99 (.86)

.48

.62

2.03 (.90)

.41

.44

1.90 (.97)

.33

.39

α_1-I = .74

…we agree on diet and nutrition.

1.90 (.79)

.62

.62

1.88 (.76)

.63

.88

1.95 (.77)

.61

.89

α_1-II = .73

…we usually agree on meals and food choices.

1.88 (.77)

.61

.65

1.93 (.75)

.65

.81

1.97 (.84)

.54

.74

α₂ = .67