Andreou, P, Neale, BM, Chen, W, Christiansen, H, Gabriels, I, Heise, A, Meidad, S, Muller, UC, Uebel, H, Banaschewski, T, Manor, I, Oades, R, Roeyers, H, Rothenberger, A, Sham, P, Steinhausen, HC, Asherson, P, Kuntsi, J (2007). Reaction time performance in ADHD: improvement under fast-incentive condition and familial effects. Psychological Medicine 37, 1703–1715.
Asherson, P, Zhou, K, Anney, RJ, Franke, B, Buitelaar, J, Ebstein, R, Gill, M, Altink, M, Arnold, R, Boer, F, Brookes, K, Buschgens, C, Butler, L, Cambell, D, Chen, W, Christiansen, H, Feldman, L, Fleischman, K, Fliers, E, Howe-Forbes, R, Goldfarb, A, Heise, A, Gabriels, I, Johansson, L, Lubetzki, I, Marco, R, Medad, S, Minderaa, R, Mulas, F, Muller, U, Mulligan, A, Neale, B, Rijsdijk, F, Rabin, K, Rommelse, N, Sethna, V, Sorohan, J, Uebel, H, Psychogiou, L, Weeks, A, Barrett, R, Xu, X, Banaschewski, T, Sonuga-Barke, E, Eisenberg, J, Manor, I, Miranda, A, Oades, RD, Roeyers, H, Rothenberger, A, Sergeant, J, Steinhausen, HC, Taylor, E, Thompson, M, Faraone, SV (2008). A high-density SNP linkage scan with 142 combined subtype ADHD sib pairs identifies linkage regions on chromosomes 9 and 16. Molecular Psychiatry 13, 514–521.
Bidwell, LC, Willcutt, EG, Defries, JC, Pennington, BF (2007). Testing for neuropsychological endophenotypes in siblings discordant for attention-deficit/hyperactivity disorder. Biological Psychiatry 62, 991–998.
Bitsakou, P, Psychogiou, L, Thompson, M, Sonuga-Barke, EJ (2009). Delay aversion in attention deficit/hyperactivity disorder: an empirical investigation of the broader phenotype. Neuropsychologia 47, 446–456.
Borger, N, van der Meere, JJ (2000). Motor control and state regulation in children with ADHD: a cardiac response study. Biological Psychology 51, 247–267.
Burt, SA (2009). Rethinking environmental contributions to child and adolescent psychopathology: a meta-analysis of shared environmental influences. Psychological Bulletin 135, 608–637.
Chen, W, Zhou, K, Sham, P, Franke, B, Kuntsi, J, Campbell, D, Fleischman, K, Knight, J, Andreou, P, Arnold, R, Altink, M, Boer, F, Boholst, MJ, Buschgens, C, Butler, L, Christiansen, H, Fliers, E, Howe-Forbes, R, Gabriels, I, Heise, A, Korn-Lubetzki, I, Marco, R, Medad, S, Minderaa, R, Muller, UC, Mulligan, A, Psychogiou, L, Rommelse, N, Sethna, V, Uebel, H, McGuffin, P, Plomin, R, Banaschewski, T, Buitelaar, J, Ebstein, R, Eisenberg, J, Gill, M, Manor, I, Miranda, A, Mulas, F, Oades, RD, Roeyers, H, Rothenberger, A, Sergeant, J, Sonuga-Barke, E, Steinhausen, HC, Taylor, E, Thompson, M, Faraone, SV, Asherson, P (2008). DSM-IV combined type ADHD shows familial association with sibling trait scores: a sampling strategy for QTL linkage. American Journal of Medical Genetics. Part B, Neuropsychiatric Genetics 147B, 1450–1460.
Conners, CK, Sitarenios, G, Parker, JD, Epstein, JN (1998). Revision and restandardization of the Conners Teacher Rating Scale (CTRS-R): factor structure, reliability, and criterion validity. Journal of Abnormal Child Psychology 26, 279–291.
Gottesman, II, Gould, TD (2003). The endophenotype concept in psychiatry: etymology and strategic intentions. American Journal of Psychiatry 160, 636–645.
Gottesman, II, Shields, J (1973). Genetic theorizing and schizophrenia. British Journal of Psychiatry 122, 15–30.
Halperin, JM, Schulz, KP (2006). Revisiting the role of the prefrontal cortex in the pathophysiology of attention-deficit/hyperactivity disorder. Psychological Bulletin 132, 560–581.
Halperin, JM, Trampush, JW, Miller, CJ, Marks, DJ, Newcorn, JH (2008). Neuropsychological outcome in adolescents/young adults with childhood ADHD: profiles of persisters, remitters and controls. Journal of Child Psychology and Psychiatry and Allied Disciplines 49, 958–966.
Jester, JM, Nigg, JT, Puttler, LI, Long, JC, Fitzgerald, HE, Zucker, RA (2009). Intergenerational transmission of neuropsychological executive functioning. Brain and Cognition 70, 145–153.
Johnson, KA, Barry, E, Bellgrove, MA, Cox, M, Kelly, SP, Dáibhis, A, Daly, M, Keavey, M, Watchorn, A, Fitzgerald, M, McNicholas, F, Kirley, A, Robertson, IH, Gill, M (2008). Dissociation in response to methylphenidate on response variability in a group of medication naïve children with ADHD. Neuropsychologia 46, 1532–1541.
Johnson, KA, Kelly, SP, Bellgrove, MA, Barry, E, Cox, M, Gill, M, Robertson, IH (2007). Response variability in attention deficit hyperactivity disorder: evidence for neuropsychological heterogeneity. Neuropsychologia 45, 630–638.
Johnson, KA, Wiersema, JR, Kuntsi, J (2009). What would Karl Popper say? Are current psychological theories of ADHD falsifiable? Behavior and Brain Functioning 5, 15.
Klein, C, Wendling, K, Huettner, P, Ruder, H, Peper, M (2006). Intra-subject variability in attention-deficit hyperactivity disorder. Biological Psychiatry 60, 1088–1097.
Kuntsi, J, Andreou, P, Ma, J, Borger, NA, van der Meere, JJ (2005). Testing assumptions for endophenotype studies in ADHD: reliability and validity of tasks in a general population sample. BMC Psychiatry 5, 40.
Kuntsi, J, Eley, TC, Taylor, A, Hughes, C, Asherson, P, Caspi, A, Moffitt, TE (2004). Co-occurrence of ADHD and low IQ has genetic origins. American Journal of Medical Genetics. Part B, Neuropsychiatric Genetics 124B, 41–47.
Kuntsi, J, Rogers, H, Swinard, G, Borger, N, van der Meere, J, Rijsdijk, F, Asherson, P (2006). Reaction time, inhibition, working memory and ‘delay aversion’ performance: genetic influences and their interpretation. Psychological Medicine 36, 1613–1624.
Kuntsi, J, Wood, AC, Rijsdijk, F, Andreou, P, Christiansen, H, Gabriels, I, Marco, R, Meidad, S, Mueller, U, Mulligan, A, Uebel, H, van der Meere, JJ, Banaschewski, T, Gill, M, Manor, I, Miranda, A, Mulas, F, Oades, R, Roeyers, H, Rothenberger, A, Steinhausen, HC, Faraone, S, Asherson, P (in press). The independent vs. shared etiology of cognitive process associated with ADHD: multivariate model fitting to large samples of ADHD and control sibling pairs. Archives of General Psychiatry.
Kuntsi, J, Wood, AC, van der Meere, J, Asherson, P (2009). Why cognitive performance in ADHD may not reveal true potential: findings from a large population-based sample. Journal of the International Neuropsychological Society 15, 570–579.
Loo, SK, Hale, TS, Macion, J, Hanada, G, McGough, J, McCracken, JT, Smalley, SL (2009). Cortical activity patterns in ADHD during arousal, activation and sustained attention. Neuropsychologia 47, 2114–2119.
Marco, R, Miranda, A, Schlotz, W, Melia, A, Mulligan, A, Muller, U, Andreou, P, Butler, L, Christiansen, H, Gabriels, I, Medad, S, Albrecht, B, Uebel, H, Asherson, P, Banaschewski, T, Gill, M, Kuntsi, J, Mulas, F, Oades, R, Roeyers, H, Steinhausen, HC, Rothenberger, A, Faraone, SV, Sonuga-Barke, EJ (2009). Delay and reward choice in ADHD: an experimental test of the role of delay aversion. Neuropsychology 23, 367–380.
Neale, MC, Boker, S, Xie, G, Maes, H (2006). Mx: Statistical Modeling. Department of Psychiatry, Medical College of Virginia: Richmond, VA.
Nigg, JT, Blaskey, LG, Stawicki, JA, Sachek, J (2004). Evaluating the endophenotype model of ADHD neuropsychological deficit: results for parents and siblings of children with ADHD combined and inattentive subtypes. Journal of Abnormal Psychology 113, 614–625.
O'Connell, RG, Bellgrove, MA, Dockree, PM, Lau, A, Fitzgerald, M, Robertson, IH (2008). Self-alert training: volitional modulation of autonomic arousal improves sustained attention. Neuropsychologia 46, 1379–1390.
Paloyelis, Y, Asherson, P, Kuntsi, J (2009). Are ADHD symptoms associated with delay aversion or choice impulsivity? A general population study. Journal of the American Academy of Child and Adolescent Psychiatry 48, 837–846.
Polderman, TJ, Gosso, MF, Posthuma, D, Van Beijsterveldt, TC, Heutink, P, Verhulst, FC, Boomsma, DI (2006). A longitudinal twin study on IQ, executive functioning, and attention problems during childhood and early adolescence. Acta Neurologica Belgica 106, 191–207.
Rijsdijk, FV, van Haren, NEM, Picchioni, M, McDonald, C, Toulopoulou, T, Hulshoff Pol, HE, Kahn, RS, Murray, R, Sham, P (2005). Brain MRI abnormalities in schizophrenia: same genes or same environment? Psychological Medicine 35, 1399–1409.
Rommelse, NN (2008). Endophenotypes in the genetic research of ADHD over the last decade: have they lived up to their expectations? Expert Reviews in Neurotherapy 8, 1425–1429.
Rommelse, NN, Altink, ME, Oosterlaan, J, Buschgens, CJ, Buitelaar, J, Sergeant, JA (2008). Support for an independent familial segregation of executive and intelligence endophenotypes in ADHD families. Psychological Medicine 38, 1595–1606.
Sattler, JM (1992). Assessment of Children. WISC-III and WPPSI-R Supplement. Jerome M. Sattler Publishing, Inc.: San Diego, CA.
Schachar, RJ, Crosbie, J, Barr, CL, Ornstein, TJ, Kennedy, J, Malone, M, Roberts, W, Ickowicz, A, Tannock, R, Chen, S, Pathare, T (2005). Inhibition of motor responses in siblings concordant and discordant for attention deficit hyperactivity disorder. American Journal of Psychiatry 162, 1076–1082.
Slaats-Willemse, D, Swaab-Barneveld, H, de Sonneville, L, van der Meulen, E, Buitelaar, J (2003). Deficient response inhibition as a cognitive endophenotype of ADHD. Journal of the American Academy of Child and Adolescent Psychiatry 42, 1242–1248.
Sonuga-Barke, EJS (2005). Causal models of ADHD: from simple single deficits to multiple developmental pathways. Biological Psychiatry 57, 1231–1238.
Taylor, E, Everitt, B, Thorley, G, Schachar, R, Rutter, M, Wieselberg, M (1986). Conduct disorder and hyperactivity: II. A cluster analytic approach to the identification of a behavioural syndrome. British Journal of Psychiatry 149, 768–777.
Uebel, H, Albrecht, B, Asherson, P, Borger, NA, van der Meere, JJ, Butler, L, Chen, W, Christiansen, H, Heise, A, Kuntsi, J (2010). Performance variability, impulsivity errors and the impact of incentives as gender-independent endophenotypes for ADHD. Journal of Child Psychology and Psychiatry, and Allied Disciplines 51, 210–218.
Waldman, ID, Nigg, JT, Gizer, IR, Park, L, Rappley, MD, Friderici, K (2006). The adrenergic receptor alpha-2A gene (ADRA2A) and neuropsychological executive functions as putative endophenotypes for childhood ADHD. Cognitive, Affective and Behavioral Neuroscience 6, 18–30.
Wechsler, D (1991). Wechsler Intelligence Scale for Children. Psychological Corporation: San Antonio, TX.
Wechsler, D (1997). WAIS III: Wechsler Adult Intelligence Scale, 3rd edn. The Psychological Corporation: San Antonio, TX.
Willcutt, EG, Doyle, AE, Nigg, JT, Faraone, SV, Pennington, BF (2005). Validity of the executive function theory of attention-deficit/hyperactivity disorder: a meta-analytic review. Biological Psychiatry 57, 1336–1346.
Wood, AC, Asherson, P, Rijsdijk, F, Kuntsi, J (2009 a). Is overactivity a core feature in ADHD? Familial and receiver operating characteristic curve analysis of mechanically assessed activity level. Journal of the American Academy of Child and Adolescent Psychiatry 48, 1023–1030.
Wood, AC, Asherson, P, van der Meere, JJ, Kuntsi, J (2009 b). Separation of genetic influences on attention deficit hyperactivity disorder symptoms and reaction time performance from those on IQ. Psychological Medicine. Published online: 15 September 2009. doi:10.1017/S003329170999119X.