Let's take a look at some potential examples of qualitative studies for interventions in autistic kids.

Qualitative studies are usually employed to make a determination from a social perspective. The aim is to provide data that reports on attitudes, perspectives, motivations, and beliefs. Many studies will self identify as a qualitative study. Look for other words (or consider using these words in your search): "ethnography" (or a variation), "focus groups", "structured interviews", and "participant observation."

Source: Tomlin & Borgetto, 2011

For this assignment considering using the Systematic Review.  Example. This is because it: 

• Usually focus on a clinical topic and answer a specific question. An extensive literature search is conducted to identify studies with sound methodology.
• The studies are reviewed, assessed, and the results summarized according to the predetermined criteria of the review question. 

Another helpful resource might be the Randomized Controlled Trials. Example. This because it:

•  Carefully planned projects that introduce a treatment or exposure to study its effect on patients.
•  Include methodologies that reduce the potential for bias (randomization and blinding) and allow for comparison between intervention and control groups. 
•  Is an experiment and can provide sound evidence of cause and effect.  
•  Randomly assigns exposures and then follows patients forward to an outcome.

Anatomy of an Article, presented by NCSU Libraries.