dr. von waldner conducts research on depression. his hypothesis is that depression results from maladaptive thought patterns. from which perspective is von waldner working?

The answer is "cognitive perspective".

There are various psychology perspectives, these perspectives include diverse clarifications for human conduct.  

One of these psychology perspectives is the cognitive perspective.  

The cognitive perspective is concerned about comprehension mental procedures, for example, memory, discernment, considering, and critical thinking, and how they might be identified with conduct.

acts of terrorism occur globally. the united nations global counter-terrorism strategy was created in order to build adequate systems of support and solidarity with victims of terrorism. here´s a summary of the proposed key themes: the importance of giving victims a face and a voice; protecting their dignity; giving victims legal status and defending their legal rights; providing victims with medical, psycho-social and financial support; building solidarity with victims; improving media coverage of victims; and focusing on the link between victims and counter-terrorism efforts more generally.