Though this may be true, it is unlikely that any reasonably successful theory of causation would support the Cartesian distinction between two different kinds of substance, mind and matter.

Their coping strategies included using emotional or instrumental support; self-distraction; denial; religion; venting; substance use; self-blame; and behavioural disengagement.

In biology, an extracellular matrix is a substance produced and released by cells that gives structural and biochemical support to surrounding cells.