Communication and Persuasion: Central and Peripheral Routes to Attitude Change

It has been over 10 years since we initiated work on our first series of collaborative experiments. As graduate students, we had great fun planning, conducting, and writing this research (Petty & Cacioppo, 1977). We enjoyed arguing with each other at our initial meeting in 1973 and have subsequently become best friends, but neither of us suspected at the time that we would or could actively maintain a research collaboration over the next decade, or that we would now find ourselves in a posi...