Self-representations in Early Adolescence: Variations in Sibling Similarity by Sex Composition and Sibling Relationship Qualities

Self-representations play an important role in adolescent development. This study compared self-representations for siblings and explored whether sibling relationship characteristics are associated with similarities or differences in sibling self-concepts. We examined self-representations of 438 adolescent sibling dyads ( M age younger sibling  =  11.6 years, M age older  =  14.3 years), finding that siblings are, on average, similar in their self-representations. This similarity varied, however, depending on sex composition and sibling relationship qualities. Results indicated that sibling modeling, warmth, and conflict were especially influential in predicting sibling resemblance vs. dissimilarity.     

Embedded and Re-purposed Technologies: Human Mobility Practices in Maasailand

This article analyses how cultural patterns and social organization shape the meaning-making of human mobility and technology, and vice versa. We extend the definition of mobile technologies from engineered devices with portable quality to tools supporting peoples’ customary mobile practices. Specifically, we analyse the embodiment of contemporary mobile technologies into Maasai culture. Mobile practices have socio-cultural, economic and political meanings. The very fabric of the culture through which mobile practices are negotiated here is cattle. In focus are the mobilities shaping Maasailand. We argue that, rather than causing radical cultural change, novel mobile technologies are embedded, rationalized and re-purposed. Furthermore, a local-to-global cooperation on indigenous rights is facilitated.     

International Migration,Immigration Policy and Welfare Spending

Increasing immigration is often linked with the public pressure for lower levels of publicly funded social expenditures. However, the empirical evidence on the effects of increasing immigration on social expenditures is discordant and depends on which countries are studied. This article argues that the employability of new immigrants as well as their entitlement to public benefits explains the observed impacts of immigration on social expenditures. Moreover, these same features can help to explain the increasing stringency of immigration policies.     

Forecasting Mexico's oil potential

This paper is directed at estimating total producible oil in Mexico. Two specific models are suggested and estimated in a method consistent with the theoretical considerations. The results suggest that approximately 40 billion barrels are ultimately recoverable and producible of which 7.5 billion barrels have been produced through the end of 1980.     

Legal issues affecting residential child care workers

Most respondents felt that child care workers' legal concerns should be addressed by requiring (1) thorough, legally approved written procedures and guidelines for all day-to-day procedures and responsibilities; (2) legally approved comprehensive record-keeping systems; and (3) access to legal support and counsel. When child care workers follow legal guidelines and a facility's procedure manuals carefully, documenting their activities in an approved record-keeping system, they can expect to be in a positive situation in any legal contest and to have behavior measured from a legal standpoint by a standard described as what a "reasonable person" would be expected to do in a similar situation and circumstance.     

Living in mobility: trajectories of Brazilians in Belgium and the UK

Within the social sciences, migration has traditionally been conceived of as a unidirectional, purposeful and intentional process from one state of fixity (in the place of origin) to another (in the destination). By mapping the trajectories of Brazilians who currently reside in Belgium or the UK, this article draws attention to a group of people whose mobile practices do not fit this definition. On the contrary, their experiences are marked by an ongoing mobility that consists of a multiplicity of potential routes, which are often unstable and which may be accompanied by changes in status. These Brazilians tend to ‘live in mobility’ in order to improve the quality of life at home. As such, leaving home becomes a strategy of staying home, which challenges what is usually evoked by the concept of ‘migration’, whereby ‘building up a new life elsewhere’ and ‘integration’ are seen as key. Whereas our respondents themselves have a more circular or mobile perspective, the receiving society discursively frames migration as one-way, and thus as a ‘threat’ that calls for social integration, control and the maintenance of national identity.     

RELAXING ASSUMPTIONS IN THE ONE SAMPLE t-TEST

This paper reviews what is currently known about the behaviour of the t-statistic when one is no longer sampling from a normal distribution. Suppose Y is a batch of data on which the t-test is performed. Briefly then, heavy-tailed components of Y give a light-tailed t , positive correlation among Y gives a heavy-tailed t, and positively skewed components of Y give a negatively skewed t. The emphasis is on understanding why one gets this type of behaviour, although some numerical tables are presented to illustrate the conclusions.     

Managers as Monitors: An Analysis of the Non‐executive Role of Senior Executives in UK Companies

An important aspect of current governance practice is the use of non‐executive directors to monitor the behaviour of company management. This paper examines the extent to which senior executives are utilized as non‐executives in large UK companies. The results suggest that executive directors are not an important source of non‐executive directors. The average number of non‐executive directorships held by each executive is 0.22. Indeed, 85% of executives hold no additional directorships. The holding of non‐executive directorships is positively related to the strength of board monitoring in the executive's company, executive tenure and company size. Executives in companies with greater growth opportunities and operating in regulated industries are less likely to hold non‐executive directorships.