Hormonal birth control may increase anxiety, depression, and stress for some, while others may notice no changes or even positive effects. Hormonal methods may influence your physical health by ...

Cognitive control is the process by which goals or plans influence behaviour. Also called executive control, this process can inhibit automatic responses and influence working memory. Cognitive ...

A single digital signal has only two states - on or off. However, if you use two inputs you can double the number of possible states, to four.