Why Do the Groups Have to Be Equivalent at the Start

question 84

Multiple Choice

Why do the groups have to be equivalent at the start of an experiment?

• A) If the groups are not equivalent at the start of an experiment, the experiment is contaminated by ethnocentrism.
• B) If the groups are not equivalent at the start of an experiment, demand characteristics are more likely.
• C) If the groups are not equivalent at the start of an experiment, it is impossible to conduct a replication.
• D) If the groups are not equivalent at the start of an experiment, we cannot be certain that the IV caused any difference observed in the DV.

Distinguish between different synthetic polymers on the basis of their chemical structures and common names.

Describe the effects of chemical reactions such as hydrolysis on polymers under various conditions (acidic, basic).

Understand the concept of transesterification in polymer chemistry.

Recognize the impact of cross-linking on the properties of polymers.

---

Definitions:

Disruptive

Referring to technologies, products, or services that radically change an industry or business strategy, often displacing established systems or practices.

Subliminal Messages

Messages that are designed to pass below the normal limits of perception, often used in advertising and media to influence consumer behavior unconsciously.

Subliminal Persuasion

A method of influencing people's attitudes or behaviors on a subconscious level, often through indirect or hidden stimuli.

Subliminal Advertising

A marketing technique that aims to influence consumers' purchasing decisions by exposing them to messages or images below their threshold of conscious perception.