Mind‐Mindedness as a Multidimensional Construct: Appropriate and Nonattuned Mind‐Related Comments Independently Predict Infant–Mother Attachment in a Socially Diverse Sample

In a socially diverse sample of 206 infant–mother pairs, we investigated predictors of infants’ attachment security at 15 months, with a particular emphasis on mothers’ tendency to comment appropriately or in a non‐attuned manner on their 8‐month‐olds’ internal states (so‐called mind‐mindedness). Multinomial logistic regression analyses showed that higher scores for appropriate mind‐related comments and lower scores for non‐attuned mind‐related comments distinguished secure‐group mothers from their counterparts in the insecure‐avoidant, insecure‐resistant, and insecure‐disorganized groups. Higher scores for appropriate mind‐related comments and lower scores for non‐attuned mind‐related comments also independently predicted dichotomous organized/disorganized attachment. General maternal sensitivity predicted neither attachment security nor organization, although sensitivity was found to relate to dichotomous secure/insecure attachment specifically in the context of low socioeconomic status. The findings highlight how appropriate and non‐attuned mind‐related comments make independent contributions to attachment and suggest that mind‐mindedness is best characterized as a multidimensional construct.     

Bias modelling in evidence synthesis

Summary.  Policy decisions often require synthesis of evidence from multiple sources, and the source studies typically vary in rigour and in relevance to the target question. We present simple methods of allowing for differences in rigour (or lack of internal bias) and relevance (or lack of external bias) in evidence synthesis. The methods are developed in the context of reanalysing a UK National Institute for Clinical Excellence technology appraisal in antenatal care, which includes eight comparative studies. Many were historically controlled, only one was a randomized trial and doses, populations and outcomes varied between studies and differed from the target UK setting. Using elicited opinion, we construct prior distributions to represent the biases in each study and perform a bias-adjusted meta-analysis. Adjustment had the effect of shifting the combined estimate away from the null by approximately 10%, and the variance of the combined estimate was almost tripled. Our generic bias modelling approach allows decisions to be based on all available evidence, with less rigorous or less relevant studies downweighted by using computationally simple methods.     

‘Only Connect’: Unifying the social in social work and social media

‘Only Connect…live in fragments no longer’

(E.M. Forster, Howards End).

This paper utilises ‘Only Connect’, the epigraph from Forster’s novel ‘Howards End’ as the starting point for exploring the challenges and opportunities of integrating social networking with relationship based social work practice. The paper discusses the more deleterious implications of social networking, whilst assuming a deliberately optimistic stance to uncover ways in which the opportunities afforded by online space can be utilised effectively within social work education and practice. Whilst recognising that social networking platforms are transforming constantly, the paper adopts Kaplan’s definition of social media as a ‘group of internet based applications that build on the ideological and technological foundations of Web 2.0’. Whilst much of the discussion within the paper relates to Twitter and Facebook, two of the most endemic international social networking platforms, it is also applicable to myriad forms of social networking. The paper begins with a discussion of UK professional conduct cases and explores these both within Klein’s concept of splitting and historical attitudes to new technologies. Drawing from emerging research data and other examples, the positive relational practices educed by social media within social work education and practice are emphasised and discussed. The paper concludes by highlighting Forster’s plea for connection and recommending that social work embraces the renewed opportunities provided by online networking.     

A Festschrift for Adrian Baddeley

This article introduces a special issue of the Australian and New Zealand Journal of Statistics, being a Festschrift for Adrian Baddeley on the occasion of his 65th birthday.     

China’s development of a multi‐tier pension system

China has made a number of major changes to its pension system in the period 2014–2020, and is in the process of establishing a multi‐tier old‐age pension system, consisting of programmes provided by the government, voluntary programmes provided by enterprises, and voluntary programmes established by individuals. Policy objectives are to reduce the fragmentation in its pension system; deal with population ageing; and diversify risks by involving the government, enterprises as well as individuals. This article shows that while China has a complex system for urban workers, the coverage provided by its multi‐tier system is uneven, with the second and third tiers being in the early stages of development.     

Impact of unbalanced DIF item proportions on group-specific DIF identification

Differences in type I error and power rates for majority and minority groups are investigated when differential item functioning (DIF) contamination in a test is unbalanced. Typically, type I error and power rates are aggregated across groups, however cumulative results can be misleading if subgroups are affected differently by study conditions. With unbalanced DIF contamination, type I error and power rates are reduced for groups with more DIF items favoring them, and increased for groups with less DIF contamination. Even when aggregated impacts appear small, differing subgroup impacts can result in a larger proportional bias than in the original data.     

Volatility,House Edge and Prize Structure of Gambling Games

This study used simulations to examine the effect of prize structure on the outcome volatility and the number of winners of various game configurations. The two most common prize structures found in gambling games are even money payoff games (bet 1; win1; win 2) found on most table games and multilevel prizes structures found in gambling machine games. Simulations were set up to examine the effect of prize structure on the long-term outcomes of these games. Eight different prize structures were compared in terms of the number of winners and volatility. It was found that the standard table game and commercial gambling machines produced fairly high numbers of short term winners (1 h), but few long term winners (50 h). It was found that the typical even money game set up produced the lowest level of volatility. Of the multilevel prize structures examined, the three simulations based on commercial gambling machines were the least volatile. The results are examined in terms of the pragmatics of game design.