Placental corticotrophin-releasing hormone, local effects and fetomaternal endocrinology

The human placenta produces corticotrophin-releasing hormone (CRH) in exponentially increasing amounts during pregnancy with peak levels during labour. CRH in human pregnancy appears to be involved in many aspects of pregnancy including placental bloodflow, placental prostaglandin production, myornetrial function, fetal pituitary and adrenal function and the maternal stress axis. Since fetal cortisol levels are associated with pulmonary development and maturity, placental CRH may have an indirect role in fetal development.Although the precise role of placental CRH in the regulation of gestational length and timing of parturition is unclear it appears to be involved in a placental clock. While glucocorticoids inhibit hypothalamic CRH production they stimulate CRH gene expression in the placenta.This difference may allow the fetal and maternal stress axes to influence this placental clock.Maternal CRH levels are elevated in many pathological conditions of pregnancy where fetal well-being is compromised, and in these situations it may act to maintain a stable intrauterine environment. Therefore, CRH appears to link placental function, maternal well-being, fetal well-being and fetal development to the duration of gestation and the timing of parturition.     

Simple visual reaction time,personality and strength of the nervous system: A signal-detection theory approach

Eysenck (1967) has reviewed evidence which suggests that introverts have a higher level of arousal than extraverts. Moreover, Gray (1967) has proposed that introverts have weak nervous systems, in the Russian terminology. Studies of simple reaction time such as that of Mangan and Farmer (1967) have posed problems for these views, but it is suggested that this may have been due to criterion differences between introverts and extraverts. In the present study a simple visual reaction-time task and a signal-detection task were conducted side by side. No significant differences between introverts and extraverts were found in measures of strength derived from the former, or measures of criterion derived from the latter. However, high N Ss were found to have a significantly lower value for Nebylitsyn's index of the slope of the reaction time/stimulus intensity function, thus supporting the view that high N Ss have relatively weak nervous systems.     

Talking about subject choice at secondary school and career aspirations: conversations with students of Chinese background

Interviews with 15 boys and 12 girls from Chinese backgrounds are reported. The interviews, which centred on option/subject choices and career aspirations, were based on the results of a survey of 794 secondary-school students. This survey had indicated that the Chinese students included were more similar in their responses to ethnic-majority than to other ethnic-minority students. Conversation analysis of the interviews revealed three themes: students attributed their choices to (i) their liking for the subject/teacher; (ii) the link between school subjects and careers; and (iii) institutional frameworks. There was a marked omission of reference to issues related to ethnicity or gender. These findings are discussed in the context of other studies of Chinese ethnicity.     

"A coherent datum of perception": Gordon Allport, Floyd Allport, and the politics of "personality"

This paper examines Floyd and Gordon Allport's early work on "personality" psychology. In the early 1920s, personality was an unorthodox topic, and for the Allports it initially served as an intellectual and personal bond. Floyd proposed the subject to his brother as a dissertation topic, and the two worked closely on developing personality tests. By 1924, however, "personality" had become the site of a dispute between the two brothers over the intellectual and methodological character of American psychology. The present study examines the origins of this dispute, while gauging the personal and professional ramifications of the dispute. On a larger level, this essay explores the role and meaning of "personality" in the academic culture of 1920s America.     

“Working model of the child interview”: Infant clinical status related to maternal perceptions

Parental perceptions and subjective experience of infants have long been considered important in clinical work with infants and families. Using three different samples of infants, we compare mothers' representations of their infants in clinically referred and nonreferred groups, using the Working Model of the Child Interview (WMCI). Twenty-four mothers of infants with failure to thrive (and 25 matched controls), 17 mothers of toddlers with sleep disorders (and 20 matched controls), and 13 mothers of infants seen in a general infant psychiatry clinic participated. Compared to their nonclinical counterparts, mothers of infants with clinical problems had representations of their infants that were significantly more likely to be classified distorted or disengaged. Infant gender, age, and birth order were independent of maternal classifications. We conclude that the WMCI is a useful structured interview to categorize mothers' perceptions and subjective experience of their infant and relationship with the infant. Mothers' WMCI classifications are associated with the clinical status of the infant. © 1997 Michigan Association for Infant Mental Health     

Influences on Counselor Race Preferences: Distinguishing Black Racial Attitudes From Black Racial Identity

The authors examined differential contributions of Black racial identity and racial attitudes toward Whites in determining counselor preferences. Results indicated that racial attitudes accounted for a significant portion of the variance in same‐race counselor preference. In addition, Black racial attitudes were distinguished from racial identity as independent contributors to counselor preferences. Los autores examinaron contribuciones diferenciales de indentidad racial y actitudes raciales de individuos Negros hacia Blancos para determinar las preferencias por un consejero u otro. Los resultados indicaron que las actitudes raciales se hallaban detrás de una porción significativa de la varianza en la preferencia por un consejero de la misma raza. Además, las actitudes raciales de individuos Negros se distinguieron de la identidad racial como factores independientes de influencia en las preferencias por ciertos consejeros.     

A simple method of producing discrete subcortical lesions using radio-frequency currents

The described procedures represent an evaluation of the use of radio frequency currents in the production of discrete subcortical brain lesions. The methods described and the electrodes used indicated that RF lesion size was closely and linearly related to a simple V dc index and that the resultant lesions were equally distributed around the position of the lesion electrode with extremely smooth and consistent perimeters.     

Women's experiences of the therapeutic value of writing about pregnancy sickness

Background

There is evidence of the beneficial effects of writing therapy in relation to a range of disorders. This is the first study to evaluate those effects in the field of pregnancy sickness.

Aim

To analyse the experiences of women using writing therapy to address issues associated with pregnancy sickness.

Method

Ten women with an age range of 32–48 years participated in this research study. All had been hospitalised at least once with severe pregnancy sickness symptoms in the form of hyperemesis gravidarum. Participants were invited to write reflectively about their former pregnancy sickness, at home, and then take part in a qualitative, semi‐structured telephone interview of approximately one hour to talk about how they experienced this writing process.

Findings

Thematic analysis identified several themes relating to the beneficial effects and uses of writing therapy and women's relational need to be heard and supported.

Discussion

This study supports previous findings about the beneficial effects of writing therapy and contributes new knowledge to the field of pregnancy sickness vis‐à‐vis the importance of emotional expression, emotional care and emotional recovery. The findings have important implications for healthcare professional practice.