Dr Daniel C. Marston is a licensed psychologist and owner of Marston Psychological Services, LLC. He is a Fellow of the American Academy of Cognitive and Behavioral Psychology and was previously Adjunct Professor at Carlow College, Pittsburgh, PA. He is based in Pennsylvania, USA.Dr Terry L. Maple is a comparative psychologist. He is Scholar-in-Residence in the Departments of Biology and Psychology at the University of North Florida, Research Professor of Biology and Psychology at Florida Atlantic University and Elizabeth Smithgall Watts Professor of Conservation and Behavior Emeritus at the School of Psychology, Georgia Institute of Technology. He is also Professor-in-Residence at Jacksonville Zoo. He is based in Florida, USA.

• 1. Introduction. 2. Learning and Memory. 3. Depression. 4. Aggression. 5. Substance Abuse. 6. Gambling Problems. 7. Autistic Spectrum Disorders. 8. Overeating and Obesity. 9. How a Clinical Psychologist and a Comparative Psychologist See the World. 10. Conclusion.

Dr Daniel C. Marston is a licensed psychologist and owner of Marston Psychological Services, LLC. He is a Fellow of the American Academy of Cognitive and Behavioral Psychology and was previously Adjunct Professor at Carlow College, Pittsburgh, PA. He is based in Pennsylvania, USA.Dr Terry L. Maple is a comparative psychologist. He is Scholar-in-Residence in the Departments of Biology and Psychology at the University of North Florida, Research Professor of Biology and Psychology at Florida Atlantic University and Elizabeth Smithgall Watts Professor of Conservation and Behavior Emeritus at the School of Psychology, Georgia Institute of Technology. He is also Professor-in-Residence at Jacksonville Zoo. He is based in Florida, USA.

• 1. Introduction. 2. Learning and Memory. 3. Depression. 4. Aggression. 5. Substance Abuse. 6. Gambling Problems. 7. Autistic Spectrum Disorders. 8. Overeating and Obesity. 9. How a Clinical Psychologist and a Comparative Psychologist See the World. 10. Conclusion.

Dr Daniel C. Marston is a licensed psychologist and owner of Marston Psychological Services, LLC. He is a Fellow of the American Academy of Cognitive and Behavioral Psychology and was previously Adjunct Professor at Carlow College, Pittsburgh, PA. He is based in Pennsylvania, USA.Dr Terry L. Maple is a comparative psychologist. He is Scholar-in-Residence in the Departments of Biology and Psychology at the University of North Florida, Research Professor of Biology and Psychology at Florida Atlantic University and Elizabeth Smithgall Watts Professor of Conservation and Behavior Emeritus at the School of Psychology, Georgia Institute of Technology. He is also Professor-in-Residence at Jacksonville Zoo. He is based in Florida, USA.

• 1. Introduction. 2. Learning and Memory. 3. Depression. 4. Aggression. 5. Substance Abuse. 6. Gambling Problems. 7. Autistic Spectrum Disorders. 8. Overeating and Obesity. 9. How a Clinical Psychologist and a Comparative Psychologist See the World. 10. Conclusion.