When “reliability” fails,must a measure be discarded?—The case of Kinesthetic Aftereffect

Critics of Kinesthetic Aftereffect (KAE) recommend abandoning it as a personality measure largely because of poor test-retest reliability. Although no test can be valid if lacking true reliability, to discard a measure because of poor retest reliability is an oversimplification of validation procedures. This pitfall is exemplified here by a reexamination of KAE. KAE scores involve measures before (pretest) and after (test) aftereffect induction. Internal analysis of a KAE study showed: Differential bias is present; its locus is the second session pretest; its form makes second-session pretest scores functionally more similar to first- and second-session test scores and functionally more dissimilar to first-session pretest scores. Given this second session bias, the retest correlation tells us nothing about the true reliability of a one-session KAE score. However, if a measure possesses external validity, it must to some degree show true reliability. Based upon a literature review of one-session KAE validity studies, we conclude that one-session KAE scores are valid and hence show true reliability. KAE remains a promising personality measure.     

Simulating the Acquisition of Verb Inflection in Typically Developing Children and Children With Developmental Language Disorder in English and Spanish

Children with developmental language disorder (DLD) have significant deficits in language ability that cannot be attributed to neurological damage, hearing impairment, or intellectual disability. The symptoms displayed by children with DLD differ across languages. In English, DLD is often marked by severe difficulties acquiring verb inflection. Such difficulties are less apparent in languages with rich verb morphology like Spanish and Italian. Here we show how these differential profiles can be understood in terms of an interaction between properties of the input language, and the child's ability to learn predictive relations between linguistic elements that are separated within a sentence. We apply a simple associative learning model to sequential English and Spanish stimuli and show how the model's ability to associate cues occurring earlier in time with later outcomes affects the acquisition of verb inflection in English more than in Spanish. We relate this to the high frequency of the English bare form (which acts as a default) and the English process of question formation, which means that (unlike in Spanish) bare forms frequently occur in third-person singular contexts. Finally, we hypothesize that the pro-drop nature of Spanish makes it easier to associate person and number cues with the verb inflection than in English. Since the factors that conspire to make English verb inflection particularly challenging for learners with weak sequential learning abilities are much reduced or absent in Spanish, this provides an explanation for why learning Spanish verb inflection is relatively unaffected in children with DLD.     

Abstraction and the (Misnamed) Language Familiarity Effect

Talkers are recognized more accurately if they are speaking the listeners’ native language rather than an unfamiliar language. This “language familiarity effect” has been shown not to depend upon comprehension and must instead involve language sound patterns. We further examine the level of sound‐pattern processing involved, by comparing talker recognition in foreign languages versus two varieties of English, by (a) English speakers of one variety, (b) English speakers of the other variety, and (c) non‐native listeners (more familiar with one of the varieties). All listener groups performed better with native than foreign speech, but no effect of language variety appeared: Native listeners discriminated talkers equally well in each, with the native variety never outdoing the other variety, and non‐native listeners discriminated talkers equally poorly in each, irrespective of the variety's familiarity. The results suggest that this talker recognition effect rests not on simple familiarity, but on an abstract level of phonological processing.     

The Psychological Burden Inflicted By Multiple Cancers in Li-Fraumeni Families: Five Case Studies

To gain insight into the psychological, emotional, relational, and family problems of families afflicted by Li-Fraumeni syndrome, we interviewed members of five such families in the Pediatric Oncology Department, Gustave Roussy Institute, where at least one member of the family had been treated. These interviews showed that families were psychologically fragile, that their interactions and thinking patterns were related to a family background plagued by the repeated occurrence of cancer, and was often marked by physical or psychological violence. They had complex imaginary etiologic explanations, and showed an ambivalent willingness to learn about cancer and the risks involved. They expressed their fear of transmitting doom and death, posed questions about whether their parents would have had them had they known the test result, and about what their own attitude would be toward childbearing. Thus genetic testing awoke disconcerting and unsolved questions for them. These first results can contribute to the design of supportive interventions and future clinical research.     

A consistent way with paradox

Consideration of a paradox originally discovered by John Buridan provides a springboard for a general solution to paradoxes within the Liar family. The solution rests on a philosophical defence of truth-value-gaps and is consistent (non-dialetheist), avoids ‘revenge’ problems, imports no ad hoc assumptions, is not applicable to only a proper subset of the semantic paradoxes and implies no restriction of the expressive capacities of language.

Impact of Behavioral Inhibition and Parenting Style on Internalizing and Externalizing Problems from Early Childhood through Adolescence

Behavioral inhibition (BI) is characterized by a pattern of extreme social reticence, risk for internalizing behavior problems, and possible protection against externalizing behavior problems. Parenting style may also contribute to these associations between BI and behavior problems (BP). A sample of 113 children was assessed for BI in the laboratory at 14 and 24 months of age, self-report of maternal parenting style at 7 years of age, and maternal report of child internalizing and externalizing BP at 4, 7, and 15 years. Internalizing problems at age 4 were greatest among behaviorally inhibited children who also were exposed to permissive parenting. Furthermore, greater authoritative parenting was associated with less of an increase in internalizing behavior problems over time and greater authoritarian parenting was associated with a steeper decline in externalizing problems. Results highlight the importance of considering child and environmental factors in longitudinal patterns of BP across childhood and adolescence.     

Interpreting claims in offender profiles: the role of probability phrases,base‐rates and perceived dangerousness

Offender profilers use verbal and numerical probability expressions to convey uncertainty surrounding claims made about offender's characteristics. No previous research has examined how these expressions might affect the recipient's interpretation of the information. Seventy participants completed an online questionnaire and results showed a diverse range of interpretations of these uncertainty expressions. Moreover, characteristic base‐rates and dangerousness affected the perceived likelihood of the profiling claim, such that increased base‐rates and perceived dangerousness resulted in an increased perception of the claim being likely. Perceived likelihoods also depended on the framing of characteristics as well as the framing of the claim itself. Finally, where claims involved presenting a characteristic qualified by a low probability these claims were interpreted as more likely than not to be present. These findings have practical implications for profilers and more general theoretical implications for the study of risk perception. Copyright © 2008 John Wiley & Sons, Ltd.