Harvard scientists are beginning to provide answers to one of the thorniest questions in psychology: How do we think? Human thought generally can be divided into two modes, the visual and the verbal. When you think about your next vacation and imagine sitting under a palm tree and sipping a cold drink, you’re probably thinking visually. If you’re thinking what you’ll say when you make a presentation at work, you’re likely thinking in words and sentences, creating inner speech.
A lot of research has been conducted to establish the risks that a high energy diet – high in saturated fat and sugar – poses to our health. The most common known results of such diets include obesity, heart disease and diabetes, but research suggests that a diet high in fat and sugar can also have a significant impact on our cognition – the way we learn, remember, and think.