When does a road become a river? Why hydrologists and water planners need to move beyond averages

When does depression become a mental disorder?

How can we differentiate a depressive disorder from 'normal' sadness? This editorial summarises three approaches: the first emphasises the context in which depressive symptoms occur; the second postulates a qualitative difference between the two conditions; and the third argues that the distinction should be based on pragmatic grounds.

When does malnutrition become a risk?

Malnutrition has been defined as a deficiency of energy, protein or other types of nutrients, which produces alterations in body function, is associated with worse outcome from illness and is reversible by nutritional support [1]. Global malnutrition generally results from simple starvation or stress starvation and has to be distinguished from deficiency of one micronutrient or vitamin [2]. Sta...

When does conscientiousness become perfectionism ?

Gordon L. Flett, PhD Canada Research Chair in Personality and Health York University Toronto Mr. C is a 50-year-old professional writer who recently made a serious suicide attempt. At his initial session, Mr. C was hesitant to discuss his situation and reason for attending. He did, however, bring a copy of his résumé so the therapist could “get to know him quickly.” He said he had been depresse...

When Does Influence Become Undue?

Ecohydrology--why hydrologists should care.