Hydrogenation of Ti50Zr25Co25 amorphous ribbons and its effect on their structural and mechanical properties

Changes in the structure and mechanical properties of Ti₅₀Zr₂₅Co₂₅ melt-spun ribbons upon electrolytic hydrogenation have been investigated. Structural analyses of the as-spun ribbons revealed the sporadic presence of icosahedral (i) quasicrystalline short-range order (SRO) in the amorphous structure. Upon cathodic charging with hydrogen, the i-SRO vanished for a hydrogen content of about 21 at.% (hydrogen-to-metal atom ratio, H/M: 0.26), resulting in a fully amorphous structure. Simultaneously, the fracture strength was found to increase while the ribbons preserved their bending ductility. However, a significant reduction in the fracture strength and ductility of the ribbons was observed for hydrogen concentrations larger than 26 at.%. Variations in the mechanical stability are discussed based on a structure-property correlation.     

An examination of gender differences in the construct validity of the silencing the self scale

Jack’s (1991) theory of self-silencing was originally designed to explain higher rates of depression in women in comparison to men. However, research finding that men score equal or even higher than women on measures of self-silencing has lead theorists to speculate that self-silencing tendencies may be driven by different motivations and have different consequences for women versus men (Jack & Ali, 2010). Using a sample of 247 college students, we examined gender differences in the construct validity of the Silencing the Self Scale (STSS; Jack & Dill, 1992). We hypothesized that women would score higher on the Externalized Self-Perception subscale, but not the other three subscales. Gender differences in the relationship between the STSS subscales and theoretically-relevant constructs were also explored. The results indicated that women on average scored higher than men on the Externalized Self-Perception subscale, whereas men scored higher on the Care as Self-Sacrifice subscale. Further, there was a significant Gender × Care as Self-Sacrifice subscale interaction in the prediction of depression, such that this subscale was negatively correlated to depression in men, and uncorrelated in women. These results clarify how self-silencing might translate into different mental health outcomes for women and men.     

Choosing an mft internship: Ingredients of a successful experience

Abstract

Although internships are now required for MFT doctoral students, little has been written about internships. This article outlines key factors doctoral students need to consider when selecting an internship site.     

Strategies for Dealing with Clients We Dislike

Therapists frequently encounter clients they dislike. Surprisingly, however, there is little in the literature on this topic. The literature that does exist offers little guidance on how to deal with this problem when it arises. The purpose of this article is to explore possible reasons a therapist may dislike a client, as well as strategies that a therapist can use when the problem is encountered. Implications for clinical training are also briefly discussed.     

The stability of the morning affect scale across age and gender

A limitation of the morningness–eveningness literature is the assumption that morningness is a ‘fixed’ construct. Morningness–eveningness scales are often developed on young adult samples, yet studies report that eveningness peaks in young adults with a shift to morningness from the age of 25 to 35 years of age. This age related change in morningness–eveningness may explain why these scales have limited success when applied in older samples. We tested this argument by developing a measurement model based on the Composite Scale of Morningness using a sample aged <30 years of age. Tucker’s congruence coefficient and confirmatory factor analysis indicated this solution was not a good fit in three older age groups. In contrast, we repeated this assessment using the ‘morning affect’ scale. This scale comprises items that measure morningness preference only. Model fit indicators suggested the ‘morning affect’ scale was a good fit across four age groups and gender.     

The effects of behavioral inhibition/approach system as predictors of Internet addiction in adolescents

This study aimed to determine how the Behavioral Inhibition System (BIS) and the Behavioral Approach System (BAS) affect Internet addiction in adolescents. Two hundred and eleven high school students participated in this study and completed the Young’s Internet Addiction Test (IAT), BIS/BAS scales, and several self-administered questionnaires about depression, anxiety, and impulsivity. Hierarchical regressions showed that BIS and BAS × BIS emerged as significant predictors of IAT; however, only BAS-fun seeking subscale predicted IAT among BAS related subscales. In further analyses, the BAS-fun seeking subscale was mediated by impulsivity and anxiety, and BIS was mediated by anxiety and depression. The current findings imply that BIS and BAS interdependently influence vulnerability to Internet addiction through both shared (anxiety) and different (depression and impulsivity, respectively) pathways.     

Implicit Attitudes Toward Arab-Muslims and the Moderating Effects of Social Information

Three studies examined the relative valence and strength of implicit attitudes toward Arab-Muslims using the Implicit Association Test (IAT) while exploring the moderation of such implicit effects. Studies have suggested that repeated exposure to information associating members of a social group (e.g., Arab-Muslims) with evaluative attributes (e.g., terrorism) might create automatic attitudes toward them. Consistent with this notion, the IAT results indicated strong implicit preference for White over Arab-Muslim, whereas the magnitude of such a bias was substantially diminished when assessed by explicit measures (Study 1). It is also interesting to note that participants exhibited implicit preference for Black over Arab-Muslim when measured by the IAT, whereas no difference was found between the 2 groups in stimulus familiarity and in explicit attitudes (Studies 2 and 3). However, such implicit effects were moderated when participants were exposed to positive information about Arab-Muslims (Study 3). Theoretical and practical implications of these findings are further discussed.     

Fear and Anxiety: Possible Roles of the Amygdala and Bed Nucleus of the Stria Terminalis

This paper presents a provisional classification of deliberate strategies for improving unpleasant affect based on conceptual judgements concerning their similarities and differences. A corpus of self-reported upward affectregulation strategies was collected using questionnaires, interviews, and group discussions, in conjunction with an examination of existing literature on related topics. A total of 162 distinct strategies were identified and a preliminary categorisation was developed by the investigators. We then conducted a card-sort task in which 24 participants produced separate classifications of the strategies. The similarity matrix arising from co-occurrence data was subjected to hierarchical cluster analysis and the obtained typology provided independent support for our proposed distinctions between strategies implemented cognitively and behaviourally, between diversion and engagement strategies, and between active distraction and direct avoidance, and for specific lower-level groupings of strategies relating to venting, reappraisal, and seeking social support. Potential refinements and applications of the resulting classification system are considered.     

CONTROLLING TWO CONFOUNDING VARIABLES IN WORD LENGTH: "VANISHED WORD-LENGTH EFFECT"

Lee (1999) argued that there would be two possible confounding variables in the word length effect. This study attempted to control those two variables. A possible confounding variable in the word-length effect is the neighborhood size. A shortword usually has more neighbors than a long word.Another confounding variable is different perceptual availability between inside and outside letters in a long word. Inside letters are easier to perceive than outside letters. Controlling of these two confounding variables in the two experiments eliminated the wordlength effect.