Manipulated variables

We manipulated two variables. 1. Manipulation of Objects: - two level manipulation: The test participants work either with a bottle of household cleaner or a tube of toothpaste. 2. Manipulation of Chemical properties: - Nine-level manipulations: - Baseline (always shown first): Object is presented without any information of its chemical properties. - Eight different looking objects with manipulated chemical properties (persistent chemicals (P), mobile chemicals (M), toxic chemicals (T), PM, PT, MT, PMT, PMT-free) are shown in a complete random order.