A test of the effectiveness of speaker verification for differentiating between identical twins

This paper presents investigations into the ability of speaker verification technology to discriminate between identical twins. It is shown that whilst, in general, the genetic and non-genetic characteristics of voice are both of value to speaker verification capabilities, it is the latter which is highly beneficial in the separation of the speech of identical twins. It is further demonstrated that through the use of unconstrained cohort normalisation as a complementary means for the exploitation of such voice characteristics, the verification reliability can be considerably enhanced for both identical twins and unrelated speakers. Experiments were conducted using a bespoke clean-speech database consisting of utterances from 49 identical twin pairs. The paper details the problem in speaker verification posed by identical twins, discusses the experimental investigations and provides an analysis of the results.     

Memories of childhood sexual abuse: narrative analyses of types, experiences, and processes of remembering

The study explored types of memory for childhood sexual abuse (CSA) in a clinical sample of 30 women and identified factors that led some women (n = 24) to report recovered memories. Questionnaires produced three types of memory: always (n = 6), recovered (n = 14), both (n = 10); however, analysis of narrative data also revealed the use of language that could not be categorized into discrete types. Recovered memories were linked to three categories of experience (cumulative reactions, atypical reactions, and atypical experiences). Subcategories identified specific contexts associated with those experiences. Findings suggest that further research is needed on the phenomenology of memory experiences using language derived from CSA survivors and a better understanding of the long-term process of interpretations of key experiences that result in reports of recovered memories.