title: Social Competence and Executive Functioning in Adolescents Following a Mild Traumatic Brain Injury

authors: Hollands, David M.

subjects: mild traumatic brain injury

abstract: A traumatic brain injury (TBI) is one of the most common injuries sustained by adolescents and a leading cause of death and long-term disability. The vast majority of these cases are mild and yet they can cause a range of difficulties across multiple domains which can negatively impact upon a person’s social functioning. The aim of this study was to determine whether adolescents who have sustained a mild TBI would differ from their uninjured peers in regards to social competence. A secondary aim was to investigate whether there was a relationship between an adolescent’s level of social competence and their executive functioning abilities. 
This investigation involved a population-based sample of 30 young adolescents who had sustained a mild TBI between the age of 12 and 15 years. Parental and/or self-report ratings of behaviour and executive function, as well as a performance-based measure of cognition were explored at 12 months post-injury. These adolescents were then compared to a community recruited, age-matched sample of their TBI-free peers. 
A composite scale of social competence based on observable behaviours was formulated. The results showed adolescents with a mild TBI demonstrated greater difficulties with socially competent behaviours compared to their uninjured peers. These difficulties were found to centre around aspect of their behavioural functioning, particularly regarding their regulation and inhibition of behaviour. Higher levels of dysfunction in the mild TBI sample were also found for parental ratings of behaviours associated with executive functions. A relationship between the Social Competence Index and executive function was not found. However, a relationship between the Social Competence Index and composite measures of cognitive functioning was. Suggesting there are more cognitions behind socially competent behaviour than the domain of executive functions alone. These findings highlight the need for post-injury screening for behavioural and social difficulties, with interventions implemented as required, to reduce the risk of on-going social impairment.

text: Social Competence and Executive Functioning in Adolescents Following a Mild Traumatic Brain Injury A traumatic brain injury (TBI) is one of the most common injuries sustained by adolescents and a leading cause of death and long-term disability. The vast majority of these cases are mild and yet they can cause a range of difficulties across multiple domains which can negatively impact upon a person’s social functioning. The aim of this study was to determine whether adolescents who have sustained a mild TBI would differ from their uninjured peers in regards to social competence. A secondary aim was to investigate whether there was a relationship between an adolescent’s level of social competence and their executive functioning abilities. 
This investigation involved a population-based sample of 30 young adolescents who had sustained a mild TBI between the age of 12 and 15 years. Parental and/or self-report ratings of behaviour and executive function, as well as a performance-based measure of cognition were explored at 12 months post-injury. These adolescents were then compared to a community recruited, age-matched sample of their TBI-free peers. 
A composite scale of social competence based on observable behaviours was formulated. The results showed adolescents with a mild TBI demonstrated greater difficulties with socially competent behaviours compared to their uninjured peers. These difficulties were found to centre around aspect of their behavioural functioning, particularly regarding their regulation and inhibition of behaviour. Higher levels of dysfunction in the mild TBI sample were also found for parental ratings of behaviours associated with executive functions. A relationship between the Social Competence Index and executive function was not found. However, a relationship between the Social Competence Index and composite measures of cognitive functioning was. Suggesting there are more cognitions behind socially competent behaviour than the domain of executive functions alone. These findings highlight the need for post-injury screening for behavioural and social difficulties, with interventions implemented as required, to reduce the risk of on-going social impairment.

year: 2014

title: Mind reading as behaviour reading: Behavour analysis and perspective taking

authors: Taylor, Tokiko

subjects: Theory of Mind

abstract: Theory of Mind (ToM) presents perspective-taking as an ability to infer another person’s mental state. Researchers in various fields have searched for evidence of ToM in both human and non-human subjects; however, this approach is highly “mentalistic,” and rarely scrutinized in the relevant literature. Attempts to identify the behavioural functions of the stimuli involved in perspective taking are still in their infancy. My primary aim was to evaluate and further refine existing behavioural approaches to perspective taking. I focused on the environmental settings required for a person to engage in deriving a perspective of another person, and how the acquired stimulus functions are generalised to novel contexts. First, I examined the integrity of the concept of “deictic framing,” which proposes that deictic expressions (I-You, Here-There, Now-Then) are the core components of perspective-taking behaviour, as defined within relational frame theory (RFT). Participants were first trained with the existing deictic-framing protocol with and without the deictic expressions. I then measured response generalisation using two different tasks designed to measure perspective taking: a visuospatial and an implicit relational assessment procedure (IRAP). No evidence of response generalisation to the other tasks was observed. Additionally, there was no difference in the performance of the participants in the two experimental groups, suggesting that deictic expressions do not have their claimed core status in perspective taking. Secondly, I examined the Relational Triangulation (RT) framework to investigate whether a specific stimulus function (i.e., perspective) would be derived in accordance with contextual stimuli bearing same and oppositional relational properties. The findings supported the broader applicability of the RT framework; however, there are many perspective-taking tasks that are beyond its scope. After considering the findings from these two experiments, I developed the proposition that we can treat perspective taking as problem-solving behaviour because there are considerable overlaps between the core behaviour relevant to various perspective-taking and problem-solving tasks, including stimulus generalisation of relevant stimuli, simple and complex discriminative stimulus functions, and relational responses. Based on this conceptual analysis, I hypothesised that a common false-belief task, the Sally-Anne test, can be represented and evaluated purely by using the concept of stimulus control. I used a conditional discrimination task in which reinforcement for identifying an individual’s false belief depended on a stimulus change in a given setting. Participants completed a non-verbal computer task and selected a particular stimulus dependent on certain stimulus changes, replicating the conditional discriminative stimuli available in this false-belief task. Approximately 61% of participants in Experiment 1 and 88% in Experiment 2 successfully discriminated the pattern of stimulus changes. In conclusion, analysis of the stimulus functions involved in deriving another’s perspective suggests that mind-reading is in fact a type of behaviour-reading. With this functional definition, we can help to address the practical challenge of resolving perspective-taking deficits in a range of contexts.

text: Mind reading as behaviour reading: Behavour analysis and perspective taking Theory of Mind (ToM) presents perspective-taking as an ability to infer another person’s mental state. Researchers in various fields have searched for evidence of ToM in both human and non-human subjects; however, this approach is highly “mentalistic,” and rarely scrutinized in the relevant literature. Attempts to identify the behavioural functions of the stimuli involved in perspective taking are still in their infancy. My primary aim was to evaluate and further refine existing behavioural approaches to perspective taking. I focused on the environmental settings required for a person to engage in deriving a perspective of another person, and how the acquired stimulus functions are generalised to novel contexts. First, I examined the integrity of the concept of “deictic framing,” which proposes that deictic expressions (I-You, Here-There, Now-Then) are the core components of perspective-taking behaviour, as defined within relational frame theory (RFT). Participants were first trained with the existing deictic-framing protocol with and without the deictic expressions. I then measured response generalisation using two different tasks designed to measure perspective taking: a visuospatial and an implicit relational assessment procedure (IRAP). No evidence of response generalisation to the other tasks was observed. Additionally, there was no difference in the performance of the participants in the two experimental groups, suggesting that deictic expressions do not have their claimed core status in perspective taking. Secondly, I examined the Relational Triangulation (RT) framework to investigate whether a specific stimulus function (i.e., perspective) would be derived in accordance with contextual stimuli bearing same and oppositional relational properties. The findings supported the broader applicability of the RT framework; however, there are many perspective-taking tasks that are beyond its scope. After considering the findings from these two experiments, I developed the proposition that we can treat perspective taking as problem-solving behaviour because there are considerable overlaps between the core behaviour relevant to various perspective-taking and problem-solving tasks, including stimulus generalisation of relevant stimuli, simple and complex discriminative stimulus functions, and relational responses. Based on this conceptual analysis, I hypothesised that a common false-belief task, the Sally-Anne test, can be represented and evaluated purely by using the concept of stimulus control. I used a conditional discrimination task in which reinforcement for identifying an individual’s false belief depended on a stimulus change in a given setting. Participants completed a non-verbal computer task and selected a particular stimulus dependent on certain stimulus changes, replicating the conditional discriminative stimuli available in this false-belief task. Approximately 61% of participants in Experiment 1 and 88% in Experiment 2 successfully discriminated the pattern of stimulus changes. In conclusion, analysis of the stimulus functions involved in deriving another’s perspective suggests that mind-reading is in fact a type of behaviour-reading. With this functional definition, we can help to address the practical challenge of resolving perspective-taking deficits in a range of contexts.

year: 2022

title: Kūkupa, koro, and kai: The use of Māori vocabulary items in New Zealand English children's picture books

authors: Daly, Nicola

subjects: New Zealand

abstract: When a linguistic form from one language is used in another language, such words are known as borrowings or loan words (Crystal 2003: 56). The English language is renowned for its large capacity for borrowing and it has been suggested that the growth in internationalism in recent times has led to people seeking new words to indicate their local identity (Crystal 1995; Crystal 2003). Certainly this is the case of New Zealand English, the most distinctive aspect of which is borrowings from te reo Maori (Deverson 1991). In 1984 Deverson estimated that most New Zealanders have a passive knowledge of at least 40-50 borrowed Maori loan words (Deverson 1984). This figure has been recently revised by Macalister to 70-80 such words (20,-,63.). A study of the frequency of Maori loan words in New Zealand English in New Zealand School Journals of the 1960s and 1990s showed an incidence of around 6 words per 1,000 (Macalister 1999). Kennedy and Yamazaki (1999) also found borrowed Maori words at a rate of 6 per thousand words. Macalister (2006b) has examined the use of Maori loan words in New Zealand English across a 150 year period from 1850-2000. He examined a corpus of a little under five and a half million words from three sources: Newspapers, parliamentary debates and School Journals. Across the three sources there was an increase from 3.29 words per 1,000 in 1850 to 8.8 per thousand in 2000. Macalister lists the reasons for this change as including urbanisation of the Maori population between 1945 and 1975, which created more contact; the changing status of the Maori language with the kOhanga reo movement; the establishment of the Maori Language Commission (Te Taura Whiri i te Reo Maori) and legislation of Maori as an official language of New Zealand in 1987.

text: Kūkupa, koro, and kai: The use of Māori vocabulary items in New Zealand English children's picture books When a linguistic form from one language is used in another language, such words are known as borrowings or loan words (Crystal 2003: 56). The English language is renowned for its large capacity for borrowing and it has been suggested that the growth in internationalism in recent times has led to people seeking new words to indicate their local identity (Crystal 1995; Crystal 2003). Certainly this is the case of New Zealand English, the most distinctive aspect of which is borrowings from te reo Maori (Deverson 1991). In 1984 Deverson estimated that most New Zealanders have a passive knowledge of at least 40-50 borrowed Maori loan words (Deverson 1984). This figure has been recently revised by Macalister to 70-80 such words (20,-,63.). A study of the frequency of Maori loan words in New Zealand English in New Zealand School Journals of the 1960s and 1990s showed an incidence of around 6 words per 1,000 (Macalister 1999). Kennedy and Yamazaki (1999) also found borrowed Maori words at a rate of 6 per thousand words. Macalister (2006b) has examined the use of Maori loan words in New Zealand English across a 150 year period from 1850-2000. He examined a corpus of a little under five and a half million words from three sources: Newspapers, parliamentary debates and School Journals. Across the three sources there was an increase from 3.29 words per 1,000 in 1850 to 8.8 per thousand in 2000. Macalister lists the reasons for this change as including urbanisation of the Maori population between 1945 and 1975, which created more contact; the changing status of the Maori language with the kOhanga reo movement; the establishment of the Maori Language Commission (Te Taura Whiri i te Reo Maori) and legislation of Maori as an official language of New Zealand in 1987.

year: 2007