en-gb Social facilitation concern the extent to which a given piece of an individual's behaviour is affected by the real, imagined or implied presence of others. http://www.simplypsychology.org/Social-Facilitation.html Article detailing the definition and history of psychology. http://www.simplypsychology.org/whatispsychology.html Details of how to write a scientific report in psychology. http://www.simplypsychology.org/research-report.html A variable is anything that can vary, i.e. changed or be changed, such as memory etc. http://www.simplypsychology.org/variables.html