Table 1.

Measurements included in the LFLSAD

	Measurement	Instrument	Age group (year)
Clinical Interview	Diagnoses of mental (Axis 1) disorders according to DSM criteria	MINI‐Plus	18+
		MINI‐Kid	8–17
Questionnaires	Social anxiety symptoms	LSAS‐SR	18+
		SAS‐A	8–17
	Fear of negative evaluation	BFNE‐II‐R	8+
	General anxiety	STAI trait	8+
		STAI state (before and after MRI scan)	8+
	Depressive symptoms	BDI‐II	18+
		CDI	8–17
	Affect	PANAS	8+
	Temperament	BIS/BAS	13+
		BIS/BAS‐C	8–12
	Autism screening	AQ	18+
		SRS, completed by both parents about their child(ren)	8–17
	Handedness	EHI	8+
Estimation of intelligence	IQ	WAIS‐IV subtests (similarities and block design)	17+
		WISC subtests (similarities and block design)	8–16
MRI scan	Structural and functional MRI		8+
EEG experiment	EEG measurement, including collection of saliva for cortisol measurements		8+
Genotyping	Collection of saliva	Oragene•DNA OG‐500 kit	8+

Note. MINI‐Plus = Mini‐Plus International Neuropsychiatric Interview (MINI Plus version 5.0.0; Sheehan et al., 1998; van Vliet & de Beurs, 2007); MINI‐Kid = MINI Kid interview version 6.0 (Bauhuis et al., 2013; Sheehan et al., 2010); LSAS‐SR = Liebowitz Social Anxiety Scale—self‐report (Fresco et al., 2001; Mennin et al., 2002); SAS‐A = Social Anxiety Scale—adolescents (La Greca & Lopez, 1998); BFNE‐II‐R = revised Brief Fear of Negative Evaluation II scale (Carleton et al., 2006; Leary, 1983); STAI = State–Trait Anxiety Inventory (Spielberger et al., 1970); BDI‐II = Beck Depression Inventory II (Beck et al., 1996; Van der Does, 2002); CDI = Children's Depression Inventory (Kovacs, 1983, 1985; Timbremont & Braet, 2002); PANAS = Positive and Negative Affect Schedule (Peeters et al., 1996; Watson et al., 1988); BIS/BAS = Behavioral Inhibition and Behavioral Activation Scales (Carver & White, 1994); BIS/BAS‐C = Behavioral Inhibition and Behavioral Activation Scales for children (Muris et al., 2005); AQ = Autism‐Spectrum Quotient questionnaire (Baron‐Cohen et al., 2001); SRS = Social Responsiveness Scale (Constantino et al., 2003; Roeyers et al., 2011); EHI = Edinburgh Handedness Inventory (Oldfield, 1971); WAIS = Wechsler Adult Intelligence Scale IV (Wechsler et al., 2008); WISC = Wechsler Intelligence Scale for Children III (Wechsler, 1991); MRI = magnetic resonance imaging; EEG = electroencephalography; LFLSAD = Leiden Family Lab study on Social Anxiety Disorder.