Correct answer is d) discussion of papers relevant to a topic.
Different methodologies are used in psychological research to achieve specific purposes. Some of the most important methodologies are listed here. When searching PsycINFO, you can limit your search to a particular methodology to find studies that match your preferred approach.
All of the articles below are on the same topic, social development and autism. But their methodologies are different.
Bruinsma, Y., Koegel, R. L., & Koegel, L. K. (2004). Joint Attention and Children with Autism: A Review of the Literature. Mental Retardation and Developmental Disabilities Research Reviews 10(3): 169-175.
Robel, L., Ennouri, K., Piana, H., et al (2004). Discrimination of Face Identities and Expressions in Children with Autism: Same or Different? European Child & Adolescent Psychiatry 13(4): 227-233.
Starr, E., Szatmari, P., Bryson, S., et al (2003). Stability and Change among High-functioning Children with Pervasive Developmental Disorders: A 2-Year Outcome Study. Journal of Autism and Developmental Disorders 33(1): 15-22.
Jarusiewicz, B. (2002). Efficacy of Neurofeedback for Children in the Autistic Spectrum: A Pilot Study. Journal of Neurotherapy 6 (4): 39-49.
Sallows, G. O., & Graupner, T.D. (2005). Intensive Behavioral Treatment For Children With Autism: Four-Year Outcome and Predictors. American Journal on Mental Retardation 110(6): 417-438.
Hollander, E., Swanson, E., Anagnostou, E.,
et al (2006). Liquid Fluoxetine versus Placebo for
Repetitive Behaviors in Childhood Autism. In J. L. Cummings (Ed), Progress in Neurotherapeutics and Neuropsychopharmacology
( pp. 105-113).
Perry, R., Cohen,