The Magic What-If Machine

<p><span style=color: rgba(000var(--O42jJQ1))>How do we find the TRUE CAUSE of what happens? When Momo drinks a special smoothie and wonders but how do we REALLY know if it makes me jump higher? she and her twin Puri discover the economist's secret: comparing what is with what would have been. Playground adventures that teach the same tools economists use to find answers. Prepare for aha! moments at any age!</span></p><p></p><p><em style=color: rgba(000var(--O42jJQ1))>Building tomorrow's problem-solvers one story at a time.</em></p><p></p><p>This is Volume 1 of the Impact Evaluation Series for Children and a brief introduction to the concept of <strong>Counterfactuals</strong> in <strong>Research Design and Methodology.</strong></p>