Third generation: research into nail failures led to an improved design with interlocking screws manufactured from fatigue-resistant titanium alloys that were placed in a multiaxial direction.
I conclude by acknowledging a debt of gratitude to Ostrom for laying the foundations for the third generation research agenda on the commons and inspiring a new generation of scholars.
It may no longer be justified to conduct more "first-generation" research comparing active-learning approaches with traditional lecture; rather, for greater impact on course design, second-generation researchers should focus on what types and intensities of exposure to active learning are most effective for different students, instructors, and topics.
As research on early childhood intervention continued to evolve, a distinction was made between first- and second-generation research.
Second-generation research addresses issues that are of value in the daily activities of children and families and that deal with assessment of intervention services and goals.
First-generation research is concerned with the child and methods to assess and intervene with the child's impairment and disability.
Second-generation research is based on the realization that active learning is more effective than passive lecture - a conclusion based on a large body of research (Dirks 2011; Ruiz-Primo et al. 2011).
In summary, as demonstrated by the growing body of literature of teaching phylogenies, we contend that second-generation research is both stimulating and fruitful - not only for tree-thinking, but across the entire breadth of biology.
As for second generation, intense research is still needed for a fully functional industry at a suitable time.
Nosek and colleagues (2011) suggest that the second generation of research on implicit social cognition will come to be known as the "Age of Mechanism".
A second generation of research focused on examining differences in race and ethnicity [ 23].
