Contextual specificity of extinction of delay but not trace eyeblink conditioning in humans

Renewal of an extinguished conditioned response has been demonstrated in humans and in animals using various types of procedures, except renewal of motor learning such as eyeblink conditioning. We tested renewal of delay and trace eyeblink conditioning in a virtual environment in an ABA design. Following acquisition in one context (A, e.g., an airport) and extinction in a different context (B, e.g., a city), tests for renewal took place in the acquisition (A) and extinction context (B), in a counterbalanced order. Results showed renewal of the extinguished conditioned response in the delay but not trace condition.     

The Paradoxes and Promise of Community Coalitions

Community coalitions, as they are currently applied, are unique organizations whose ability to promote community change is different from other types of community organizations. This article explores those differences and elaborates how community coalitions can use those differences to transform conflict into greater capacity, equity, and justice. Concerns are also raised in this article about how community coalitions can intentionally and unintentionally protect the status quo and contain the empowerment of grassroots leadership and those of marginalized groups. There is a need for more theory, research, and discourse on how community coalitions can transform conflict into social change and how they can increase the power of grassroots and other citizen-lead organizations.