This volume brings together cutting-edge experimental research from leaders in the fields of linguistics and psycholinguistics to explore the nature of a phenomenon that has long been central to syntactic theory - 'island effects'. The chapters in this volume draw upon recent methodological advances in experimental methods in syntax, also known as 'experimental syntax', to investigate the underlying cognitive mechanisms that give rise to island effects. This volume presents a comprehensive empirical review of a contemporary debate in the field by including contributions from researchers representing a variety of points of view on the nature of island effects. This book is ideal for students and researchers interested in cutting-edge experimental techniques in linguistics, psycholinguistics and psychology.