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The objective of this paper is to examine the effect of spending one extra year in high school on early marriage and childbirth.

The study takes advantage of the education reform in 2007 that extended the years of high school education by one to conduct a quasi experiment. The marriage and fertility outcomes of women who completed a four-year senior high school education are compared to those who completed a three-year senior high school education.

The findings from the study indicate that the one-year extension in high school education led to a 4.75 percentage point reduction in the probability of ever marrying by age 27 and a 6.7 percentage point reduction in the probability of ever given birth. The authors demonstrate that the extension of the duration of high school education by one year has a heterogeneous effect, as it reduced the fertility and marriage outcomes of rural girls more than urban girls. The study reveals opportunity costs and confinement effects as possible mechanisms through which the policy affected early marriage and birth.

This study is one of the few studies that examine the impact of the duration of secondary school education on fertility and marriage. For Africa in particular, there is no such study. Thus, this study provides a unique contribution to the literature since available studies on this subject matter can only be found in advanced economies. Unlike other studies in Africa that use a design that provides the combined effect of duration of schooling and school enrolment on fertility and marriage, this design enables the authors to only look at the effect of duration of schooling on fertility and marriage.

The peer review history for this article is available at: https://publons.com/publon/10.1108/IJSE-04-2023-0323

The purpose of this paper is to examine the prevalence of labour force participation and the factors affecting labour supply among older persons in Ghana. Both the extensive and intensive margins of older persons’ labour supply were analysed.

The paper uses nationally representative samples of household and individual data in 2016–2017 – Ghana Living Standard Survey (GLSS 7) data – for the analysis. Heckman’s sample selection model is used to analyse both the extensive and intensive margins of older persons’ labour supply.

The study found that older persons in Ghana who are pensioners, widowed, have high levels of education, poor health status and live in urban areas are less likely to participate actively in the labour market. On the other hand, being head of a household, married and owning certain assets increase the likelihood of an older person to work. Furthermore, pensions, household headship and post-secondary education have negative effects on the labour supply as having them make older persons work fewer hours per week compared to their counterparts.

This research is the first study to examine the prevalence of old age employment and factors that affect labour market decisions of older persons in Ghana. It also adds to the limited literature on pension and retirement decisions in developing countries.

This study has assessed the thermal performance of locally fabricated bio-based building envelopes made of coconut and corn husk composite bricks to reduce building wall heat transmission load and energy consumption towards green building adaptation.

Samples of coconut fiber (coir) and corn husk fiber bricks were fabricated and tested for their thermophysical properties using the Transient Plane Source (TPS) 2500s instrument. A simulation was conducted using Dynamic Energy Response of Building - Lunds Tekniska Hogskola (DEROB-LTH) to determine indoor temperature variation over 24 h. The time lag and decrement factor, two important parameters in evaluating building envelopes, were also determined.

The time lag of the bio-based composite building envelope was found to be in the range of 4.2–4.6 h for 100 mm thickness block and 10.64–11.5 h for 200 mm thickness block. The decrement factor was also determined to be in the range of 0.87–0.88. The bio-based composite building envelopes were able to maintain the indoor temperature of the model from 25.4 to 27.4 °C, providing a closely stable indoor thermal comfort despite varying outdoor temperatures. The temperature variation in 24 h, was very stable for about 8 h before a degree increment, providing a comfortable indoor temperature for occupants and the need not to rely on air conditions and other mechanical forms of cooling. Potential energy savings also peaked at 529.14 kWh per year.

The findings of this study present opportunities to building developers and engineers in terms of selecting vernacular materials for building envelopes towards green building adaptation, energy savings, reduced construction costs and job creation.

This study presents for the first time, time lag and decrement factor for bio-based composite building envelopes for green building adaptation in hot climates, as found in Ghana.