We draw attention to two problems associated with the use of instrumental variables (IV), the importance of which for empirical work has not been fully appreciated. First, the use of instruments that ...

When you only need two outcomes, the IF function is fine. But the moment you start stacking conditions (if this, then that, otherwise if this, then that), you’re building a house of cards. At first, ...

Steven Nickolas is a writer and has 10+ years of experience working as a consultant to retail and institutional investors. Thomas J. Brock is a CFA and CPA with more than 20 years of experience in ...

China and Russia presented their vision of a new international order at the Shanghai Cooperation Organisation (SCO) summit, where Beijing offered new financial incentives to countries aligned with the ...

Julia Kagan is a financial/consumer journalist and former senior editor, personal finance, of Investopedia. Toby Walters is a financial writer, investor, and lifelong learner. He has a passion for ...

China and Russia have a long, complicated history together, marked by periods of both cooperation and fierce strategic rivalry. The neighbors have strengthened ties over the past decade, but some ...

Small Medium Enterprise, Tangible Resources, Product Innovation Performance, Innovation, SME’s Age Share and Cite: Bakar, L. (2025) The Age-Resource Dynamic and Product Innovation Performance. Open ...

Background Patellofemoral pain (PFP) is a prevalent condition commencing at various points throughout life. We aimed to provide an evidence synthesis concerning predictive variables for PFP, to aid ...

Andrew C. McCarthy is a senior fellow at National Review Institute, an NR contributing editor, and author of Ball of Collusion: The Plot to Rig an Election and Destroy a Presidency. This is ...

The left and right sides of the brain control different functions in the body. Some people believe that the left and right sides of the brain can determine personality and behavior, but there is no ...