Are these methods based on sound research evidence about what works best?

The experimental design and methods developed are based on project needs.

The method is based on the theory of complex variables.

And even the new methods we tried were still based on the hierarchical structure.

There is also a lack of learning ability associated with logic based methods.

Their method was based on eye contact and psychic connection.

The methods of instruction were based on the idea that very young children attempt to draw before they can write.

The method, still in use today, is based on interlocking teeth.

The method is based on a conservative control volume formulation.

The simplest and most common method is based on speed or pace.