In high concentrations, this drug is toxic. In the right concentration, it acts as a mood stabilizer

Why are researchers investigating a possible role for glutamate in schizophrenia? a. Known antipsychotic medications have their primary effects on glutamate. b. People with schizophrenia have abnormal levels of glutamate activity

c. PCP use, which affects glutamate systems, mimics most symptoms of schizophrenia. d. Glutamate levels are directly influenced by cocaine and amphetamine.

Undesired acts that bring some pleasure but that you want to eliminate can be seen as _____ in the short run but _____ in the long run, while desired acts that bring some displeasure but that you want to increase can be seen as _____ in the short run but _____ in the long run

a. wanted ... unwanted ... unwanted ... wanted b. unwanted ... wanted ... wanted ... unwanted c. wanted ... wanted ... unwanted ... unwanted d. unwanted ... unwanted ... wanted ... wanted