Political scientists often study interactive and quadratic effects, yet their control strategies remain underdeveloped. Conventional methods frequently include additive controls without relevant product terms.
🔍 Problem: These simple approaches can incorrectly attribute variable interactions to main effects.
📊 Solution: Regularized estimators—Adaptive Lasso, Kernel Regularized Least Squares (KRLS), and Bayesian Additive Regression Trees (BART)—effectively address these issues by minimizing misattribution, enhancing efficiency, reducing overfitting risks, and maintaining low false-positive rates.
💡 Example: The authors demonstrate how flawed controls impact inferences using a recent paper's findings.
📚 Recommendation: Adopting these methods improves the reliability of conditional relationships across political science research.
| Problems with Products? Control Strategies for Models with Interactive and Quadratic Effects was authored by Janina Beiser-McGrath and Liam Beiser-McGrath. It was published by Cambridge in PSR&M in 2020. |
