Frontmatter -- PREFACE -- CONTENTS -- I. INTRODUCTION -- II. THE STATUS OF LINGUISTICS AS A SCIENCE -- III. THE CONCEPT OF 'LINGUISTICALLY SIGNIFICANT GENERALIZATION (LSG)' AND ITS CRITICS -- IV. THE REVISED EXTENDED STANDARD THEORY (REST) AND ITS MODULES VERSUS THE STANDARD THEORY (ST) -- V. THE MOTIVATION FOR EXTENDING THE BASE COMPONENT: THE LEXICALIST HYPOTHESIS (LH) -- VI. MOTIVATIONS FOR CONSTRAINING THE 'EXTENDED' CATEGORIAL RULES: X' THEORIES -- VII. FURTHER ARGUMENTS AGAINST X1' AND X2 ' THEORIES -- VIII. SOME CONCLUDING ARGUMENTS: 'ADVANCED' LEXICALISM VERSUS EARLY TRANSFORMATIONALISM -- FOOTNOTES -- BIBLIOGRAPHY