“…Debt maturity % of debt which matures in more than 1 or 2 years "+" , Géczy et al 1997 Option ownership "?" Number, dummy, or market value of shares obtainable by options (exercisable within 60 days) by managers (and directors) , Lin/Smith 2007, Graham/Rogers 2002, Knopf et al 2002, Rogers 2002, Allayannis/Ofek 2001, Gay/Nam 1998, Howton/Perfect 1998, Fok et al 1997, Géczy et al 1997, Dolde 1995, Nance et al 1993 Berkman/Bradbury 1996 , Lel 2006, Mardsen/Prevost 2005, Borokhovich et al 2004, Graham/Rogers 2002, Knopf et al 2002, Rajgopal/Shevlin 2002, Rogers 2002, Allayannis/Ofek 2001, Guay 1999, Gay/Nam 1998, Fok et al 1997, Géczy et al 1997, Mian 1996, Nance et al 1993 Current year change in net tangible assets + depreciation/ net income + depreciation Progressive corporate tax structure "+" Howton/Perfect 1998, Mian 1996, Nance et al 1993 Tax credits (1) Dummy which indicates the availibility of TCs "+" , Mian 1996 Tax credits (2) Absolute available TCs (scaled) or deferred income (scaled) "+" , Dionne/Garand 2003, Fok et al 1997, Nance et al 1993 Tax Knopf et al 2002, Rajgopal/Shevlin 2002, Rogers 2002, Allayannis/Ofek 2001, Haushalter 2000, Guay 1999…”