---
title: "Requiring proper experimental design:  control groups, random subject..."
date: 2022-06-27
source: facebook
type: comment
context: "Spencer Greenberg's post"
fb_link: "https://www.facebook.com/dyi/l/?l=AYOSMZ1VHrcsIiaH_ADBfzbcsgAzsPkOlAGHzsggsfmU3880nMNgrgFznPssPmQFA98-QOiOpcUhdzm3xwfv2XAxtvmpDVoVSJ-eQf6P1AIBPMnqvZQmpBru_haaz_TPPaOY4wP2oBtg0JekwqM2-7lQ2FkG10P6oV7-WqRAg_5zhp4nxLJ1zbIsEGSoEL8hn9Aicha2BeU&s=519"
---

# Requiring proper experimental design:  control groups, random subject...

*June 27, 2022 — Comment Spencer Greenberg's post*

Requiring proper experimental design:  control groups, random subject selection, blinding.